hmm it's funny because I literally just recommended some wide angle lenses on another thread. To be honest though, I used to love that UWA angle, especially on vacation trips, but nowadays I shoot a panorama instead. I'm finally going full frame (shooting film now to hold me over while I wait for my D800 to ship), and I find that "24" on my 24-70 is wide enough.
Now I'm a lot more interested in the short telephoto range, say 70-105mm or so, but I'm also shooting a lot more people and portraits than I ever was before when I was just camera-on-vacation guy.
Edit: I also used to be into long telephoto stuff too, 70-200/100-300/70-300 lenses when I shot sports. I didn't even buy a telephoto to use with my D800, my longest lens will be my 105mm, amazing how things change.