I already owned the theatrical and director's cuts on seperate dvds but being such a fan of the film I decided to splash out on the blu-ray. Both cuts are included here on two seperate discs and all the extras from both previous dvd releases are included here but there are no blu-ray exclusives. The original has the standard 2.0 stereo track, and the sound isn't particularly great. The audio certainly isn't a massive improvement over the original dvd release. The picture is also the most disappointing that I have seen on blu-ray. Now I know that the film was made with a small budget and it was filmed using cheap film stock so the film is never going to look pristine no matter what format it is on, but this really doesn't look much better than the dvd release. In fact at times the film looks downright terrible on blu-ray. Edges blur and colours are way over-saturated. This gives it the look of an 80's tv movie which may have been Richard Kelly's original intention, but it makes it less than desirable on blu-ray.
To summise, Donnie Darko is a wonderful and haunting movie in every resepct. The blu-ray however is certainly not worth the upgrade. Hold onto your original dvd copy until the inevitable Ultimate Edition arrives on blu-ray, hopefully with a little tweaking from the director.