A lot of the folks over in the Canon DSLR forum were recommending the Canon 50mm f/1.8 lens, so I finally picked one up. It's not an amazing lens, but the important part of the lens is it's price tag: $80. For $80 you get a lens that's small, light, and with a big 1.8 aperture. The autofocus sucks and the manual focus ring is a tad hard-to-use, but it was nice to my wallet and it can take some nice photos.

I also got some close-up lenses for my 70-200mm so that I can take zoomed-up photos of bugs and flowers. I haven't taken that for a spin yet.