Why would she do Deep Impact?
She was in for seriously like 3 minutes. Wasn't even a notable cameo like 'Girl Interrupted' or 'Mission Impossible', ANY actress could have played it and yet they get Redgrave to do such an embarassing part.
Surely she could have missed that one out.
If Sandra Bullock can win an Oscar for 'The Blind Side' then ... ANYTHING ... is possible!