Abed's Master Key (originally on nbc.com, Hulu, & YouTube)
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Based on the series Community, which has had a number of webisodes that aired before and since this one, but this is the only one I recall watching. It's a series of 3 animated webisodes, which streamed in 2012, shortly before the show returned from hiatus in the middle of its third season. Abed gets a master key to Greendale, so his friends start taking advantage of him. It was reasonably amusing.