A while back I found yet another way to geek out. XD Ever heard of SingShot.com? It's an online karaoke site, lol. It's a really fun way to waste some time, whether you can sing or not. 
Basically, it has a huge database of karaoke tracks, and you can pick some and use their interface to make your own recording! It's loads of fun, and even if you can't sing too well (like me) you can still have a lot of fun with it.
Let me know if you try it out. I'm a member on there (also by the name of Shuko there), and I'll listen to your stuff for you.
Keep in mind two things, though. One, you won't be able to do this if you don't have a microphone. And two, it is a VERY geeky thing to do. Don't say I didn't warn you!
Basically, it has a huge database of karaoke tracks, and you can pick some and use their interface to make your own recording! It's loads of fun, and even if you can't sing too well (like me) you can still have a lot of fun with it. Let me know if you try it out. I'm a member on there (also by the name of Shuko there), and I'll listen to your stuff for you.
Keep in mind two things, though. One, you won't be able to do this if you don't have a microphone. And two, it is a VERY geeky thing to do.
Don't say I didn't warn you!