It isn't very often that a show would schedule someone like Johnny Depp and Megan Fox on the same night. Too many bruised egos and also shows like to spread the stars out for ratings. Anyway, Johnny got about 20 minutes of one on one time with Dave, while Megan Fox got only about 5. She did get two segments though which was her face saving moment.
Johnny was funny as hell and I could watch his entire appearance repeatedly, but the folks at CBS really suck when it comes to pulling things off YouTube. I don't mind them doing that, but then I think they should make more available on their own site like NBC does. Hell, they don't even allow embedding on most of their programs. Here then, is the link to 3 minutes of Johnny on Dave.