A good actor is someone who knows how to take the part and make it real and make it honest and be effective in it. If it's in a funny movie and as long as they are cast in an appropriate way humor will come from it.
Wrinkles should merely indicate where smiles have been.
Anyone who stops learning is old whether at twenty or eighty. Anyone who...
Age is an issue of mind over matter. If you don't mind it doesn't matter.