That was over 16 years ago in 2005.
Today he is 48, and has starred in 55 movies in total, 40 since Monster-in-Law was released.
In Monster-in-Law, I think Adam Scott looks:
Monster-in-Law scores 5.7 out of 10 on The Movie Database.
Adam Scott's first acting role was as 'Defiant Con Officer' in Star Trek: First Contact, released in 1996 when he was 23.