That was over 23 years ago in 1999.
Today he is 91, and has starred in 109 movies in total, 21 since The Thirteenth Floor was released.
In The Thirteenth Floor, I think Armin Mueller-Stahl looks:
The Thirteenth Floor scores 6.8 out of 10 on The Movie Database.
Armin Mueller-Stahl's first acting role was as 'Norbert' in Heimliche Ehen, released in 1956 when he was 25.