History
(launched as The History Channel in 1995; rebranded as History in 2008)
IMDb; official website; TV Tropes; Wikipedia

Documentaries:
The Haunted History of Halloween (10/26/1997)
Fantastic Voyage: The Evolution of Science Fiction (9/28/2002)
Comic Book Superheroes Unmasked (7/?/2003)
Celebrating the Green: The History of St. Patrick's Day (3/1/2009)

Houdini (9/1-2/2014; miniseries)
Roots (5/30/2016 - 6/2/2016; miniseries; also aired on Lifetime and A&E)

stuff I want to see
Hatfields & McCoys