That was over 23 years ago in 1998.
Today he is 72, and has starred in 175 movies in total, 115 since Sphere was released.
In Sphere, I think Samuel L. Jackson looks:
Sphere scores 5.8 out of 10 on The Movie Database.
Samuel L. Jackson's first acting role was as 'Stan' in Together For Days, released in 1972 when he was 23.