Unbelievably, you can watch every episode of It's Always Sunny in Philadelphia online at hulu.com. I read about it on Keith's blog, which is a good one to check for movie reviews.
If you've never seen It's Always Sunny in Philadelphia, it's kind of like Seinfeld, but with binge drinking and occasional drug abuse. Or to put it another way: Danny Devito on acid.
It's not for everyone.