By now, we're all familiar with the decade long bit that features the epic Kimmel VS. Damon feud. In true JKL fashion, the A-lister's appearance inspired the evening to be dubbed "Hate Night" which included a pre-taped sketch of the late night host and the Oscar winner attempting to work through their issues in couples counseling!
May we just say things certainly took an inneresting turn. LOLz!
Watch the clip (below) to see if these estranged celebrities were able to bury the hatchet after all these years!
And if you missed it, Damon also made a quick appearance in Jimmy's monologue!