As trendy web projects go, Pandora is pretty sweet. Signup (for free), pick an artist, and the "music genome project" will style a personalized music station for you.
My current stations include:
Jem, Tori Amos, Sarah Slean, Nickelback, Tegan and Sarah, Armin Van Buuren (creator of the 24 Longest Day Remix , my favorite techno song in the history of favorite techno songs), DJ Tiesto and The Cranberries.

Any other suggestions?

[I just watched the 24 music video, again. That's almost too much Jack Bauer for me to handle. Almost.]

I just took this test from the University of Newcastle - a music test -
The test asks you to listen to 30 pairs of short melodies; some match exactly, the rest are slightly different. I correctly identified 24 out of 30, which is well short of perfect, but much better than pure guessing. If I didn't have American Idol on in the background, I might have scored better.
This brings me to my newest weekend hobby: piano playin'. J's parents have a piano, and I've brought the few piano/sheet music books I have down there to start practicing. I never took formal piano lessons, but with 8 years of flute playing, and a few years of piccolo and oboe for good measure, I know about notes and phrasing and stuff. Being able to hear when a note is wrong helps a bunch. I find it entertaining to keep asking "give me a song!" and then picking out the notes. As I told a friend today - once I learn my chords, and how to keep my left hand moving, I'll be dangerous.
Anyway, I can noodle through a few Tori Amos songs if I drop out occasional chords and the really tricky parts. J's mom has a large collection of sheet music, ranging from the best of the 70s to 50's standards. I do best with the songs that I know by heart, so the score for Les Miserables and the 80s commercial tunes are also good to practice on.
Does anyone know of any good online sources for sheet music that people have already transposed?