"I brought fun by the gallon to our pal Jimmy Fallon," the "Gutfeld!" [and self-proclaimed king of late night] said on Friday night's monologue. "It went so well all the way home I could not stop talking about it with my Uber driver [displaying a picture of "Late Show" host Stephen Colbert.

Greg Gutfeld, host of Fox News’s late-night show Gutfeld!, will appear as a guest on The Tonight Show Starring Jimmy Fallon Thursday, a crossover he expects will be “fun.” Gutfeld! is growing in attention in the late-night television genre,