I've embedded too many videos today so I won't put this one up here. But here's a link to a YouTube video of Rich Little's appearance at the White House Correspondent's Dinner. It runs about twenty minutes.
Slightly off-topic: I noticed that one weblog (this one) that picked up a link from me on this described me as "a Leno apologist who obviously doesn't care for some aspects of Letterman's comedy." I think "apologist" is the wrong word there but just for the record, I like both Dave and Jay…though I watch them with generous fast-forwarding because I don't think either guy has been at his best for quite a while. And speaking of not being at your best for a long time, go watch Rich Little.