Oh Rob. I haven't seen the plastic skull (aka Kingdom of the Crystal Skull), but from everything I hear, it's a good thing I haven't. I've never been into Indiana Jones anyway.
Although that brings up a movie I was very disappointed in - the Nancy Drew movie with Emma Roberts. She seemed way too young for the part (I think it's her voice), it had only snippets of the main book characters apart from her dad and Ned, and the case and her snooping were just...boring. Compared to the experiences you get in the books and even the games, the movie was seriously lacking.