Pictures able to be printed out?

[boofer36]

Hmmph. Well, there are a few pictures (i.e. the cast of Grease, for a real example) that I would like to print out so I could send to the cast of certain movies/shows that I like and get the picture REALLY signed by all of them, instead of shot derned preprints that I hate for cast photos. xD

I was wondering. Do some pictures, like a cast photo of Grease, have some sort of copyright law on them, making it illegal to print them out and send them to be signed? What pictures are able to be signed by the cast members without some sort of legal issue?

Thanks.