You forgot Tidus and Yunas' laugh scene. That probably was the bottom of voice acting forever. Although, strangely, Tidus' voice (for me) was much better at the end. I thought I had got used to it, but then I went New Game +, and he really (to me) just sucks at the beginning.

The whole David Hayter repeating obvious stuff - that really grated my nerves to no end.