The New 20d Is Here

I'm so happy, I finally took the plunge and bought to 20D kit w/18-55mm lens. After I use the camera for a while I will have to decide on another lens, reasonably priced, versatile, with a good quality zoom. I don't like to carry a lot of gear. I've been reading all of the lens reviews but am still unsure of what to buy. Also the 50mm f/1,8II is highly recommended in addition to the zoom.
Cannon, Tokina, Sigma, Tamron???? So much to think about and read.