I don't mean to make anyone feel guilty. I just wanted to clarify "fair use" a little. The truth is, a lot of companies don't seem to care about their stuff being used on YouTube, probably for reasons DrTooth stated. If the copyright owners come after you, they'll probably just want you to take your stuff down. In that unlikely case, it's good to know the law rather than fighting based on a misconception. The plus side of sharing is that after watching this video I went looking for Gershon Kingsley's original tune (as well as Hot Butter's version) and was able to find it. (There, back on topic!) I've ended up buying a lot of music after I was able to find it on YouTube.