I turned on Genius in my iTunes and am currently enjoying the results. There's a piano mix, a Cecilia Bartoli mix, a jazz mix (yes, I have enough jazz for this), etc. It's sort of like random only better. It's like having your own radio station, only it plays things you actually like. Try it.
If you don't have iTunes, I can't explain where I got mine. It appeared magically in my desktop. I thought, well there it is. I should put something in it. This was while I was working and didn't need an iPod. Then one thing led to another, and I'm now fully Appled up. That alone is Genius.