Hmm not sure where that came from but yeah I'm disappointed that Peeves didn't make it into the films especially as Rik Mayall would have been brilliant at him. I heard that Rik was quite upset that his part had been cut. I hope we get to see the Directors Cut of PS some day. I'm not sure they continued to film Peeves though for the later ones.
The only thing is I don't know is how they would have been able to "do" him. I thought that Poltergeists were invisible and they do not take a solid form like Ghosts. I must admit every time I read the books it does bother me because JKR keeps making references to Harry etc looking out for Peeves - how would they be able to do that unless he had a solid form?? Gets me every time.
Can anyone confirm the difference between Poltergeists and Ghosts?