gollum's pupils
Ok, I will not comment on Frodo's finger or Legolas' eyes because honestly, I didn't notice anything, but I will comment on the whole thing about gollum's pupils... you see, the thing about the pupils is they're SUPPOSED to be that way... it's the difference between gollum and smeagol, gollum is the evil one and is depicted with the very small pupils, and smeagol is the pitiful one, depicted with the bigger pupils. In the scene with the reflection on the water it might be difficult to tell who's speaking at what time (gollum or smeagol) because they are both speaking evil things... but again, that's what the pupils are for.