Christian Slater was 44 in Hot Tub Time Machine 2 when he played the character 'Choozy Doozy Host'.
That was over 9 years ago in 2015.
Today he is 54, and has starred in 108 movies in total, 13 of those since Hot Tub Time Machine 2 was released.
In Hot Tub Time Machine 2, I think Christian Slater looks: