Is it just me. . .

. . .or is there a bit of a boom in "good-natured ribbing" among Hollywood's leading men these days? I don't watch much television at all, and the few hours I've seen within the past week have featured a lot of slug-in-the-arm type antics between George Clooney and Brad Pitt, plus some brotherly give-and-take between Matt Damon and Ben Affleck.

Did somebody do a focus group?