Jane, what a fabulous question! This is so hard to answer because I have so many favorites.
But if I had to choose one reality show that I look forward to year after year and aim to never miss I'd have to pick Project Runway. Even after eight seasons I look forward to watching each episode. The producers always pick great designers who have great personalities. I can't wait to see what the challenge will be each week and what the designers will create. Also, who doesn't love Tim Gunn?
Honorable mentions would have to go to Big Brother, Real Housewives of New York and New Jersey, and The Amazing Race.