That was over 22 years ago in 1999.
Today he is 54, and has starred in 35 movies in total, 22 since The Iron Giant was released.
In The Iron Giant, I think Harry Connick Jr. looks:
The Iron Giant scores 7.7 out of 10 on The Movie Database.
Harry Connick Jr.'s first acting role was as 'Sgt. Clay Busby' in Memphis Belle, released in 1990 when he was 23.