Venture Brothers, Metalocalypse, Family Guy (obviously), and
ATHF are all great (although
ATHF has gotten really weird lately...the first two seasons were by far the best).
Are sealab and Home movies even on anymore? Those were two of my favorites in 2004/5 when I was an Adult Swim Junkie.
However, I LOVE LOVE LOVE LOVE Robot Chicken...both seasons purchased on DVD
Oh, and I occasionally catch
Bleach/
Death Note/
Blood+/
Lelouch of the Rebellion, but they usually go to slow for me, and only serve to remind me to go watch the episodes I've torrented.