Which Actor Went F**king Nuts On-Set With Julia Roberts?

Julia Roberts was on Letterman last night to promote her new movie Duplicity with Clive Owen. After briefly discussing her dashing, charming British co-star, the talk soon turned to more difficult actors.

After asking Dave “will you bleep me?”, Julia described a Christian Bale-esque outburst by an unnamed actor. Dave eventually guessed: “George Clooney?” Clip at left. (It’s long but it’s worth it, if just for Julia and David’s initial banter…or lack thereof.)