That was over 21 years ago in 2000.
Today he is 82, and has starred in 97 movies in total, 59 since X-Men was released.
In X-Men, I think Ian McKellen looks:
X-Men scores 6.9 out of 10 on The Movie Database.
Ian McKellen's first acting role was as 'Roger' in Alfred the Great, released in 1969 when he was 30.