Cool toy!
http://www.sr.se/cgi-bin/p1/src/sing/default.asp
You enter a phrase (or series of phrases, but it may take a while to load), and it searches through it's database of songs for the words, and plays it. I like putting in actual song lyrics:
You can dance if you want to, but you leave your friends behind, cause your (not you're, the database doesn't know it) friends don't dance and if they don't dance, well they are (not they're) no friends of mine.
If the word isn't in the database, then you can recommend a song that has the word in it, so they can get it later.
Really nifty.