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 and Jimmy Fallon have some — drunken — history. The Fox News personality was a guest on the Thursday, August 7 episode of The Tonight Show Starring Jimmy Fallon, where he revealed he once ...

Late-night host Jimmy Fallon can’t seem to wrap his head around how Fox News’ Greg Gutfeld is pulling double his ratings. “This is the Tonight Show,” Fallon reportedly said. “It seems a little odd ...