I almost didn't see this film, buy my wife was late getting to the theatre, so we caught this one. I'm glad I did, because I liked it. Perhaps it was because the theatre was very loud, The ending was a little different with the ghost staying with one of the main characters right up until the end.
Sure, a bit of a ripoff, but I liked the pace and the different camera shots.
I remember when Angel was going off the air, ew.com posted the same thing that NBC might be willing to "pick up the scraps" and take over another couple seasons since they were looking to add some sci-fi shows.