I watch, intermittantly:
The Apprentice
Real World/Road Rules
Osbornes
Survivor
The PBS reality shows (there's a new one starting, Colonial House, I think it is..)
And the first few audtion shows of American Idol and I have to admit I loved watching My Big Fat Obnoxious Fiance and House Rules
Sometimes if there's nothing else on:
American Chopper
Trading Spaces
Cribs (damn there are a lot of people with tons of money and zero taste)