Curb is fucking fantastic. If you like(d) Seinfeld, you'll love Curb.Community and Curb Your Enthusiasm are the one's that jump out at me, I've heard about Community before and someone I know is really into it.
I watched the first ep of Arrested Development but I'm not sure it's really gripped me yet, have you seen it? And therefore does it get much better?
I can watch a comedy show at any time though given the fact they don't tend to last very long, I'll try and watch Community soon though as I've heard enough good things about it to merit a watch.