The big bummer with doing songs that are well-known is that they are usually flagged by The Tube.
Obscure or lesser-known stuff usually keeps one's YouTube account open a little longer, since it's less likely you'll get a strike on the account. That's why I've been partially avoiding using a lot of material. I'll probably cave soon enough, though.
I saw your "Prayer" suggestion, though, JR - I do have an idea for this one. Might just go ahead with it.