I just watched the movie Taken. With an even more obscene ass-kicking to age ratio than Gran Torino, it was a little bit ludicrous. However, Liam Neeson is awesome as always and, while he may not have the physique that immediately makes one expect gratuitously well executed violence, his personal charisma makes it seem all right and plausible enough for a mind geared toward the suspension of disbelief (kind of like an older version of Matt Damon in the Bourne series). Anyway, I don't want to give anything away for those who have yet to see the film (and plan to), so I won't go on at length.
EDIT: I realise that the ratio ass-kicking:age should really be ass-kicking:(1/age), but saying "ass-kicking to the reciprocal of age" just didn't flow as well.