oh man, are you kidding? that is a hard pick.
next to impossible...but, i will go lock stock and two smoking barrels for sentimental reasons. and, i don't like brad pitt, though he was admittedly wonderful in snatch.
for you other adam sandler fans...
50 first dates, or big daddy.
(obviously, there is no point in comparing happy gilmore to anything since it is the best movie ever)