congrats to
house_monkey and
colitis for correctly guessing the actor!
this be the unsolved clue:
he played gerhart in 28 days.. the rehab movie not the zombie one, which is 28 days later ;)
his character Gerhardt falls off the rope climbing thingy and the harness bunches around his recreationals, leading him to [loudly] note the promenance of his package.
[thanks to www.afan.dk for the photo]
well done yous!
:)