Of course I mainly know him from Star Trek, but there were also several episodes of Heroes; a few eps of The Neighbors; an ep of Fresh off the Boat; as well as guest appearances as himself in various things. And he posts lots of cool memes on facebook. And he's done a bunch of voice work.
I know him from The Larry Sanders Show; and Max Headroom; and Muppets from Space; and There's Something About Mary; and the Hellboy movies; and Arrested Development; and How the Grinch Stole Christmas; and the very short-lived sitcom Bent; and an episode of Psych; and Paul; and Eurotrip; and Teaching Mrs. Tingle; and Magic Camp; and Funky Monkey; and some voice work.
I know him best from Doctor Who (and an episode of The Sarah Jane Adventures). There's also Fright Night; and Harry Potter and the Goblet of Fire; and Good Omens; and voice work in The Pirates! In an Adventure with Scientists!; and Ferdinand.
Thornton, Billy Bob
First thing I remember him from is Hearts Afire, though I may have seen him in stuff before that. I also know him from Bad Santa, and The Ice Harvest. And he voiced Jigo in Princess Mononoke.
I know him from I guess a few eps of Star Trek: The Next Generation; and Candyman; and a couple eps of Star Trek: Deep Space Nine; and some Final Destination movies; and Hatchet; and I must have seen or heard him in some things I've forgotten.
Of course, there were the Back to the Future movies. Also, The Hat Squad, which I wish I remembered better than I do. And Little Spies. And Top Gun. And probably some other stuff...
I know him from Beautiful Dreamers; and The Larry Sanders Show; and Men in Black (and its sequel); and Marie Antoinette; and Zoom; and several episodes of 30 Rock; and he voiced Zeus in Hercules. And I've surely forgotten some things.
I know him from Studio 60 on the Sunset Strip; and Mr. Sunshine; and Weird Loners; and an episode of Supernatural; and an episode of Gortimer Gibbon's Life on Normal Street; and an ep of For the People; and maybe some things I've forgotten. Also voice work in Zootopia.
I know him from Carrie; and Grease; and Welcome Back, Kotter; and a couple of Look Who's Talking movies; and Pulp Fiction; and Hairspray; and he voiced the title character in Bolt.
I know him from a minor role in From Dusk till Dawn; and Spy Kids; and Muppets Most Wanted; and an episode of Brooklyn Nine-Nine; and an episode of American Horror Stories; and an episode of The Book of Boba Fett; and as himself in an episode of People vs. Food; and voice work in Dora and the Lost City of Gold; and Storks; and any number of things I've forgotten. And he's done more things I want to see.
Best known as Mini-Me in a couple of Austin Powers movies, though he's had better roles. There was a recurring part on Jack of All Trades; and a TV movie called Karroll's Christmas; and The Imaginarium of Doctor Parnassus.
I know him best from Firefly and its spin-off movie Serenity. But there's also A Knight's Tale; an episode of Arrested Development; a few eps of Dollhouse; V (the reimagined series); Suburgatory; and a small role in Abraham Lincoln: Vampire Hunter; and Powerless; and Peter Pan & Wendy. And some voice work.
I know him from a couple of Lord of the Rings movies; and The Chronicles of Riddick; and the Star Trek reboot; and RED; and Dredd; and Almost Human; and Thor: Ragnarok; and possibly some things I've forgotten.
I know him from Keen Eddie; and Boston Legal; and Human Target; and Crisis. I may have seen some other stuff I don't really remember.
Van Der Beek, James
I know him from Dawson's Creek (though I've only seen the first season); and a cameo as Dawson in Scary Movie; and a fictionalized version of himself on Don't Trust the B---- in Apt. 23; and a few eps of How I Met Your Mother; and himself in Jay and Silent Bob Strike Back; and he voiced Pazu in Castle in the Sky; and maybe some things I've forgotten.
Van Dyke, Dick
I know him from Mary Poppins; and Chitty Chitty Bang Bang; and Dick Tracy; and an episode of The Golden Girls; and Diagnosis Murder; and a small role as himself in Alexander and the Terrible, Horrible, No Good, Very Bad Day; and Mary Poppins Returns; and I feel like I must have seen him in other things, but I'm not sure.
I know him from Gilmore Girls, and Heroes, and American Dreams, and Cursed, and a recurring role on Gotham, and The Whispers.
No doubt I saw him in various things before this, but the first thing I really remember him from is State of Grace. And no doubt I've seen him in various things since then, but the main one I remember is American Dreams. And there were a couple eps of The 4400.
I know him from The Dead Zone; and Batman Returns; and Pulp Fiction; and Sleepy Hollow; and Man on Fire; and Wedding Crashers; and Hairspray; and Peter Pan Live!; and I feel like I should've seen him in other stuff. Um, he guest hosted Saturday Night Live a few times maybe. And there was the music video for Fatboy Slim's "Weapon of Choice." And an ad for Kia Optima.
I know him from My Favorite Martian (though I didn't see much of that); and The Sting; and an episode of Star Trek: The Next Generation (and apparently a couple episodes of Voyager); and The Stand; and Picket Fences; and The Apartment.
Ward, Zack (no relation)
I know him from Titus; and Resident Evil: Apocalypse; and a couple eps of Dollhouse; and surely some things that I've forgotten.
I know him from The Omen; and Time Bandits; and Time After Time; and Tron; and a minor role in Star Trek V; a different, larger role in Star Trek VI; and A Christmas Carol; and a minor role in Scream 2; and Titanic; and Wing Commander; and Teenage Mutant Ninja Turtles II; and an episode of Doctor Who; and Mary Poppins Returns; and some voice work. I've probably seen him in some other stuff... though I think I sometimes confuse him with Alan Rickman...
I know him from Much Ado About Nothing; and Man on Fire; and The Book of Eli; and The Equalizer. And I want to see more of his work.
I know him from a relatively minor role in Batman Begins; and from The Last Samurai; and Memoirs of a Geisha; and Inception; and Cirque du Freak; and Pokemon Detective Pikachu.
There's the Matrix trilogy; the Lord of the Rings trilogy; V for Vendetta; Captain America: The First Avenger; he voiced Megatron in the Transformers movies; and a couple of voices in Legend of the Guardians: The Owls of Ga'Hoole. And I've probably seen him in some other stuff.
I know him from Wings; and Studio 60 on the Sunset Strip; and the miniseries The Shining; and The D.A.; and Reefer Madness; and an episode of Monk; and Grow Up, Timmy Turner!; and a few eps of Falling Skies; and an episode of Sleepy Hollow (as Thomas Jefferson's hologram); and a couple eps of iZombie; and voice work in Marvel Rising; and Ultimate Spider-Man; and probably some other things...
Weiss, Michael T.
Know him best from The Pretender. But there's also some voice work.
I know him from Batman; and Danger Theatre; and Monster Island; and an episode of Powerless; and probably numerous guest appearances as himself on various shows; and some voice work.
I know him from Adventures in Babysitting; and Bicentennial Man; and Little Manhattan; and Studio 60 on the Sunset Strip; and The Good Guys; and The Cabin in the Woods; an episode of Brooklyn Nine-Nine; and Get Out; and Saving Mr. Banks; and the short film Agent Carter.
I know him from Willy Wonka & the Chocolate Factory; and Young Frankenstein; and Blazing Saddles. And I think that's about it, but I should probably see more of his work.
Of course, first and foremost, he was The Fonz, on Happy Days. I also know him from Scream; and an episode of So Weird; and several episodes of Arrested Development; and probably some things I've forgotten. And he voiced Grandpa Bill in All I Want for Christmas Is You.
I know him from a ton of Allstate commercials; and Terminator: The Sarah Connor Chronicles; and 30 Rock; and John Wick; and Brooklyn Nine-Nine.
I know him from The Journey of Natty Gann; and Reaper; and a couple eps of Psych; an episode of Dollhouse; an episode of Castle; several eps of How I Met Your Mother; an episode of Deadbeat; Good Night, and Good Luck; a small role in X-Men: First Class; a recurring role on Fresh off the Boat; season two of Agent Carter; and Jeepers Creepers II; and Gilmore Girls: A Year in the Life; and the Funny or Die short The Girl with the Tramp Stamp Tattoo; and the short film Dinner is Served; and Suburban Gothic; and I've probably seen him in some other stuff. He voiced Commissioner Gordon in Batman: The Killing Joke.
He had a very small role in Back to the Future Part II. And I probably saw Radio Flyer at some point, but I don't remember anything about it. Same with The Ice Storm. Of course I know him best from the Lord of the Rings movies. There was also Eternal Sunshine of the Spotless Mind, and Everything Is Illuminated, and I saw maybe the first couple episodes of Wilfred; and Treasure Island. He also did voice work in 9, and Tome of the Unknown/Over the Garden Wall. And I've probably seen him in other things that I've forgotten.
I know him from Special Unit 2; and a recurring role on Seinfeld; and Watchmen (+ Under the Hood); and Mirror Mirror; and I'm sure I've seen him guest on various shows and in some commercials and stuff...
I know him from The Equalizer; and A Christmas Carol; and Over My Dead Body; and an episode of Crusade; and Hot Fuzz.
Mainly know him from ALF. There's also A Midsummer Night's Dream; and The Stand; and I'm certain I've seen him in other stuff I don't really recall.
I know him from what little I watched of ER; and Swing Kids; and Donnie Darko; and White Oleander; and The Librarian TV movies; and Falling Skies; and The Red Line.
I know him from Mary Poppins; and Babes in Toyland; and The Gnome-Mobile; and That Darn Cat!; and a couple eps of The Twilight Zone; and he voiced the Mad Hatter in Alice in Wonderland.
I know him from the rebooted Star Trek movies; and Terminator Salvation; and Odd Thomas; and Green Room; and maybe other stuff.