I dated one of the producers years ago and was aware of the title, but had never actually bothered to rent it. It was on as the Sunday late movie recently so I taped it to finally satisfy my curiosity.
I had forgotten that so many recognizable actors had signed on for the film and I think the cast acquitted themselves well with what they were given.
I think the biggest problem was that it wasn't so much a dark comedy as it was a dark farce. I'm not sure you can do farce with much of an edge, but I'm sure there are other films out there that have successfully done so. On the other hand, without the light touch it would have been a very different, dark and heavy film and most likely would have been suffered for it. I suppose the writer could have attempted a more staged and wordy, less 'madcap' version, but maybe then the ending wouldn't have been as interesting as it was here.
Maybe it sounds like I didn't enjoy it, but I did. I just enjoyed it for what it is, a late night popcorn movie. Good job ML, I'm proud of you.