I watch my shows when I go to bed, except the day time shows, which I watch when I clean or eat. The most important ones (i.e. the ones I'd have a fit about if my roommate made Tivo skip or accidentally deleted) are Oprah, Ellen, and Big Brother...adding Survivor to the list soon! Actually, I'm about to add a lot to the list since it's about to be season premiere galore!
It's quickly becoming Rome. It's a good show, and they could pretty much continue it indefinitely since Rome does have about 400 more years until the Fall of Rome to pull from.
Desperate Housewives, Grey's Anatomy (is that coming back this year??), and The OC are my guilty pleasures that I won't miss either (although "won't miss" usually involves setting the DVR and recording the whole season so I'm sure I don't miss one!)
Sar, Is Shameless the show where the Dad is a pisstank and is often found passed out on the floor while the eldest daughter tends to the other kids??
Have only seen one episode but found it rather entertaining in a disturbing kind of funny way.
Definitely House
The Sopranos - I am eagerly awaiting the next season!
other than that, I do like TLC's Trading Spaces and While you Were Out. I'm getting ideas