IMO adult swim has gotten a lot better over the years.
Most of the anime they show is actually good, save for overrated stuff like Bleach.
A lot of their shows are made in flash too, and I KNOW that if they were submitted to the portal by someone else all you guys would vote 5 on them.
When I was younger, I'd watch it for the piss and shit humor and over the top violence in the shows, but know that I've matured I actually get a lot more of the jokes, thus amplifying the entertainment factor.