Damon, who thinks that Pitt is ``very, very funny'', said that the best prank he saw him play was on George Clooney.
130180
Brad Pitt is very funny:
34622
Michael Jackson was 'cracking up'
100982
George Clooney: 'I'm just living my life'
12730
Knightley giggles through love scenes
5311
Clooney doesn't fear experimenting with new looks
122068
A funny thing happened.
169434
Reese witherspoon loves stunts
69137
Laughter is the best medicine
71341
Brad Pitt named ``most powerful actor''
135552
Brad Pitt ``thrilled'' by Oscar nominations
65707
George Clooney testifies in fraud trial
157695
Emma Watson got star struck when she met Matt Damon
160827
David Schwimmer looks out for prankster Thandie Newton
174495
George Clooney couldn't relate to character
162661
Orlando Bloom took himself too seriously
10378
Brad Pitt surprises his fans
142891
Brad pitt: 'acting is a young man's game'