For me:

~Aqua Teen Hunger Force - Volume's 1-4
~Arrested Development - Season 1
~Chapelle's Show - Volume's 1 & 2
~Clone High - Complete Series
~Dilbert - Complete Series
~Family Guy - Volume's 1 - 3
~Harvey Birdman - Season 1
~Home Movies - Season's 1 & 4
~Futurama - Season's 1 - 4
~Invader Zim - Complete Series
~The Office (US) - Season's 1 & 2
~Sealab 2021 - Season 4
~The Simpsons - Season's 1, 2, 6
~South Park - Seasons 1-5
~Space Ghost: Coast to Coast - Volume 1
~Undergrads - Complete Series

I only get TV series DVD's when they're $30.00 (CAN) or below so that's why most of 'em are incomplete.