[Arjuna]

"I can't decide between The Prestige, Inception, and maybe Dark Knight."

I'm surprised that Memento didn't make your Christopher Nolan short-list. Perhaps you didn't care for it, you haven't seen it, or you simply forgot to add it.

If you haven't seen it, I highly recommend it.

[InclinedPlane]

I love Memento, but I'm not sure it's on the same level. I haven't seen it in a while though, I might have to add it to the list.