Corrected entry: In the beginning of the movie, when Kat meets Casper, his hand goes right through hers, indicating he wouldn't be able to hold onto flesh without going through it, but there are plenty of time during the movie where the ghosts hold onto people. Casper is even able to fly while dangling Kat.
GameBlade
28th Aug 2006
Correction: The fact that casper puts his hand through Kats only proves he CAN pass his hand through hers. It does not prove he CAN'T make tangible contact with people or objects.
GameBlade