Have you seen the McGann? ...er, the movie, I mean? I'm pretty sure the Doctor had to boost Grace up to get the key, and looking at jack and the TARDIS there I'd think he might be a BIT too short for it. I'd suggest the Doctor boost him up, but I suspect a) they'd just boost Rose and b) Jack would probably enjoying copping a feel by giving the Doctor a leg up. So to speak. ^____^ I know I would!