I am just writing an early plug for the fifth "Casper" feature film. Most people don't know that there were more than one feature film. That's because the other four have been direct-to-video. In fact, the last one, "Casper's Haunted Christmas" was completely computer-animated. The third one, "Casper Meets Wendy" is notable today for being the first film role for the currently popular Hillary Duff (as Wendy) and in my opinion, the best of the Casper films.
I am looking forward to these films as some of them have material that is better than the original one. The first one gets a bit weighed down by issues regarding "unfinished business" etc.
Here are the Casper films in order of release and my ratings (1 to 4):
Casper - 1995 ***
Casper: A Spirited Beginning - 1997 **
Casper Meets Wendy - 1998 ***1/2
Casper's Haunted Christmas - 2000 **
Casper's Scare School - 2006 (n/a)