YouTube to mp3 Converter
You enter in the YT url, convert and it allows you download an Mp3 of the audio track, does it in seconds so you don't have to wait for a video to play through.
I'm using it to make samples for in-between songs, just grabbing movie/TV quotes that are in relation to the context of the upcoming song, mixing it with some keys and sound effects.
I used to do this with a microphone in front of a home entertainment system speaker, this is MUCH quicker and cleaner!
Just figured I'd pass it along. Obviously, you can use the site to rip shitty audio quality Mp3's as well.