One of Jim Carrey's earlier films featuring Cameron Diaz.
May have been mentioned on the previous Amazon £8.98 thread but couldn't find it.
When a no-account bank clerk discovers a curious wooden mask he finds it has some interesting properties; to wit, the mask magnifies the wearer's personality to superhuman proportions--oddly, others seem to find this attractive. The no-longer-nebbischy clerk enjoys his new life considerably, but when he seduces the girlfriend of a powerful gangster, complications result. Academy Award Nominations: Best Visual Effects.