Weird Al's movie "UHF"
http://www.youtube.com/watch?v=mZHoHaAYHq8&NR=1
http://www.youtube.com/watch?v=8n1hKQULa9Y
And yea....the "Evil Dead" series of course. Bruce Campbell FTW.
The Kevin Smith movie series (Clerks, Mallrats, Chasing Amy specifically - but they're all really good except Jersey Girl).