Dirpy

Dirpy lets you convert the audio from YouTube vids into high-quality mp3s; just use their search to get YouTube results and choose a video or enter your desired clip's url on the homepage, create track info (title/artist/album), then hit "download" and it'll save directly to your comp -- leaving you only an iPod sync away from listening to George Brett talk about his unique pooping habits, even on the elliptical.