It's interesting to see people cite Serenity and I, Robot as great transfers.
Serenity has quite a few scenes where the VFX simply don't hold up. One that is most noticable to me is the scene where the gang is on the mule being chased by Reavers. Throughout, all of the smoke VFX looks terrible. Truly terrible.
I, Robot is generally a very good transfer but there are segments where the illusion breaks down dramatically. The scene that always comes to mind is the scene where Spooner and Calvin are in the robot factory and Spooner is walking through the ranks. Here, the illusion breaks down severely and it's clear that this is a green screen shot.
Cheers,