Denis Leary was 34 in National Lampoon's Loaded Weapon 1 when he played the character 'Mike McCracken'.
That was over 30 years ago in 1993.
Today he is 65, and has starred in 74 movies in total, 71 of those since National Lampoon's Loaded Weapon 1 was released.
In National Lampoon's Loaded Weapon 1, I think Denis Leary looks: