I own every season of The Office, and despite the fact that I can probably recite most episodes now, I still watch it all the time. Heck, I watch it on tv and dvd. If there was some sort of Office puppet show, I'd probably watch that too.
Aside from that I also enjoy Scrubs (the early seasons especially). SportsNight is a show that was only on for two seasons about 6-7 years ago, but it's out on DVD and I highly recommend it. Don't let the "sports" part scare you off if you don't like sports. It's about folks making a sports news program. Sports don't really come into play.
In the non-comedy range, if you haven't seen it already, the first season of 24 is awesome. I love Prison Break too, and the first two seasons of that are out.