What's the single most common Blu-Ray disc?

[JayEmm]

I'm curious, was discussing Blu-Ray with a friend the other day and I have a theory. We were thinking what the most common blu-ray disc is, a disc you could almost rely on someone having if you were over theirs and needed to check their setup was working, something like that.

I reckon it's Casino Royale - I recall every PS3 pretty much being bundled with a copy and I remember it being basically a poster child for the format.

Any other takers?