I really love this movie, but I must agree with Aberkowitz, I'll probably pass on this Blu-ray.
2 Reasons:
1.) I've seen it 4,543,203,938,901 times. I don't think I can ever watch it again, I had the VHS, own the DVD, not to mention that it's on TNT or TBS every other week.
2.) I can't see it really have any spectacular improvements over the DVD in terms of SQ or PQ. This one is all about the story. (and what a story it is!)