Jimmy Kimmel had both Robin Williams and Bobcat Goldthwait as guests on his TV show late Wednesday night, which made sense since they're both promoting the same project, World's Greatest Dad, in which Goldthwait directed Williams. But Goldthwait also directed the first years of Kimmel's show, which added a little something something to the chat dynamic. Kimmel's show has embraced YouTube, so you can see four segments from the episode. Williams came out first and discussed his open heart surgery. Then he talked about his surgery's impact on his current stand-up tour, which resumes in September, and how long he has been friends with Goldthwait.

Then Goldthwait came out, and talked about his relationship with Kimmel, as well as his friendship with Williams, going back to their first meeting in a Boston comedy club, and their Chinese tattoos.

And here's them talking about the movie a bit, and while Williams is quick to remind everyone that Goldthwait had made "the Citizen Kane of alcoholic clown movies" in Shakes the Clown, Goldthwait returns the favor by complimenting Williams on the length of his full frontal nudity. Also, Goldthwait said he is not on Facebook or Twitter, so if you're following or friends with him, that's a fake Bobcat.