2009-2015, 6 Seasons
Mentioned in Season 2, Episode 4
Cult US comedy (available on Netflix in the UK) about a group of misfits attending a community college. Great cast and plenty of meta in-jokes ("Six series and a movie" is an in=show catchphrase: the sixth series has just been finished and the movie is now in production) mean comedy fans tend to fall hard for this show once they discover it.
Jamie's one of those converts; Hywel probably will be when he watches it.