On Golden Pond (Dabney Coleman)
You've Got Mail (Tom Hanks; he played Tom Hanks dad in the movie)
Apollo 13 (Kevin Bacon)
I must say thank goodness for imdb.com
This might take more than 6 (but hey if someone can do it, you deserve an award)...
Next: Clark Gable
But if it is too hard....
2nd choice: Natalie Portman