For many reasons, Community is my favourite currently-running sitcom ...
... but not only that, but its creator, Dan Harmon also happens to be a D&D buff and they've done two excellent, and very funny D&D themed episodes. He also has a podcast called Harmontown where he does weekly D&D sessions.
Topless robot runs down the Top Ten Dan Harmon roleplaying tips. They are actually pretty good.
As a bonus, here is DM Abed's map from the second D&D Episode, "Advanced Advanced Dungeons and Dragons"