One idea is that you could go to highdefdigest.com and click on the blu-ray reviews, then sort by rating based on the movie, video, audio, overall, etc. I enjoy their reviews for the most part, the most informative part being the actual review of the disc and how it performs.
i would add to that:
Wall-e
Transformers (great demo disc, and like you with 60 Seconds, while not the best movie i just enjoy it)
Harry Potter 1-5 are all very impressive
Ratatouille
Batman Begins ( may as well have both )
It all depends on your tastes of course, but all those are great DISCS.
