It's a late-night crossover few saw coming: Conservative comedian Greg Gutfeld made his debut appearance on "The Tonight Show" with Jimmy Fallon.

Fox News late night host Greg Gutfeld will be a guest on "The Tonight Show Starring Jimmy Fallon" on Thursday, August 7.

Gutfeld’s Appearance on ‘The Tonight Show’ Brings Ratings Gold An appearance by Fox News Channel host Greg Gutfeld “The Tonight Show Starring Jimmy Fallon” last week resulted in ratings gold for the ...

Greg Gutfeld currently serves as host of Gutfeld! (weeknights, 10-11 PM/ET) and co-host of cable news’ highest-rated program The Five (weekdays, 5-6PM/ET).