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.

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).