Jimmy Kimmel says Ben Affleck was very "sporting" about video...

He might not be (bleeping) Ben Affleck, but talk show host Jimmy Kimmel is pretty fond of the handsome movie star-director.

In case you've been living under a rock - and I don't think any readers of this blog are - Jimmy memorably declared "I'm (bleeping) Ben Affleck" in a music video Sunday night that Ben agreed to appear in - in an extremely tight shirt!

"Ben could not have been more sporting," Jimmy told PEOPLE of his video costar. (The song was designed as a retaliation against Kimmel's girlfriend Sarah Silverman for her clip, "I'm (bleeping) Matt Damon.) "He told us, 'Listen, if we're going to do this, we've got to do it right. I don't want you guys to worry about my image.' "

In the video, Ben and Jimmy declare their love while backed by an A-list gospel choir including Cameron Diaz, Robin Williams, Ashlee Simpson and Don Cheadle. There are also non-singing cameos by Brad Pitt and Harrison Ford, who blows the new couple a kiss before driving off in his convertible - revealing a "Honk if you're f---ing Ben Affleck" bumper sticker.

"That was his real car," Kimmel says of Ford. "He's still got that [sticker] on there!"

So what did Silverman think of the new song? "I suspected Jimmy was on the down low for a long time now," she deadpanned to the New York Daily News. "I wish I could say I was surprised by this."

Here is a LINK to the video...