The Academy Awards host opens up to ET about the "unprofessional" behavior of the Oscar-winning actor.
ET spoke with the Oscars host ahead of Sunday night's show, and he had plenty to say about his pal, Matt Damon!
This year's Oscar host recently revealed that his main goal is to make sure his nemesis doesn't take the stage.
Matt Damon revealed how Affleck stays in character during Thursday's episode of 'The Late Late Show with James Corden.
Malin Akerman revisited the photos on 'Late Night with Seth Meyers.'
'This Is Us' star Chrissy Metz appeared on 'Watch What Happens Live with Andy Cohen.'
Matt Damon told the greatest Ben Affleck story on 'The Late Late Show with James Corden.'
Adam Lambert admits he got 'wasted' with Sam Smith on 'Watch What Happens Live with Andy Cohen.'
Jessica Biel stopped by 'The Tonight Show Starring Jimmy Fallon' on Thursday.
Jordan Peele stopped by 'Jimmy Kimmel Live!' on Thursday to promote his movie, 'Get Out.'
Damon jokes with ET that he will be throwing things at Kimmel from the audience at the awards show.
"I'm just sad Chris Rock isn't hosting the show, someone who's actually funny."
The actor opened up about his fake feud with the comedian at the premiere of his new film, 'The Great Wall,' which hits theaters Feb. 17.
The actor hilariously acted out a 'Maury' skit on Monday's 'Jimmy Kimmel Live' with the late night host, his wife and Martin Short!
