Agreed on all points
mrklixx. Incidentally, neither onodrim nor I have seen the movies you mention as bad (actually, she may have seen Sleepy Hollow - I didn't know her when that one came out)
The reason for that, though, is that the trailers made it readily apparent they were going to be bad. I don't get turned off from Sweeney Todd's trailer the way I was turned off from Charlie and the Chocolate Factory's trailer.
redlemon: I don't actually mind how dark the movie seems from the trailer, but that could be because I really enjoy the Sweeney Todd story itself, even without Sondheim. (But Sondheim sure does have an AWESOME take on it.) If Burton wants to take the humor from Sondheim and make it a little more psychotic, I don't mind that much - it's not all that different from what a different stage director can do to the production. Butchering the excellent score, on the other hand, is something I'm worried about.