With last week’s bizarre appearance on Late Night With David Letterman by Joaquin Phoenix, it only adds to the long list of other odd appearances that  have been on the show. This video chronicles odd moments by Madonna, Paula Abdul, Courtney Love, Crispin Glover, and of course Joaquin Phoenix himself.

As a Letterman fan, you can only hope for awkward moments like these because it is when Dave is at his absolute best.