rangersean: Tim Robbins can be seen in The Player. He's not bad, but if he's as big as reported above, he's a BIG grower.
Will Wheaton - not unless he's also a grower. I happened to catch a ST-TNG episode last night that was his last in the silly gray "acting ensign" uniform, and he didn't show, even though that outfit was reported to be held on more by luck than thread (they wouldn't replace it because he was about to get the new uniform and he had been going through a growth spurt). Even Star Trek's famous control underwear wouldn't control things that much.
Patrick Stewart, on the other hand, was regularly hardly "contained."
Peter Horton, of "Thirty Something" fame, and more recently of the Geena Davis Show, is extremely well endowed. I have an old pic of him from People Magazine and he hangs most of the way to his knee, and I've seen him in a wet-suit on some nature program as well.
And though I haven't been able to catch it a second time, I caught a glimpse of Michael Bolton hanging way low.
Burt Ward (olde Batman's Robin) apparently had lots of problems with getting those tights past censors because he kept showing. Adam West, though, apparently couldn't keep his smaller piece out of admirers.
Way too wordy that. Forgive me.