About Harry Potter... in this case, it's not like they just came up with something for a sequel because the first one did so well. It's all based on a series of novels, most of which were written and published before the first Harry Potter movie was in theaters. Fans of the first movie (myself included) would be really disappointed if there were no sequels, especially if they've read the books.
Not flaming, just putting my 2 cents in
