I just want to add this (sorry if I'm diverging from the topic slightly); I HATE cutscenes, I've always thought of them as the lazy way to explain a game's story. Rather like a TV Drama using a voice-over narrative.
Cutscenes take something away from a game's immersion, especially an FPS. The whole point of an FPS (including RPG FPS games Like Deus Ex etc), is that the player is viewing the game as if it is HE/SHE that is experiencing the game's story/events.
I'd rather play through an entire game uninterrupted by cutscenes, figuring out the plot for myself as I go. That way I can imagine that it really is me in the game. It's the same for voices, I'd rather use my own voice (in my mind), and come up with my own responses to events.
An RPG is slightly different, in that you are given choices of replies. But I'd still rather it was my own voice that I'm imagining in the game.
Anyway, I think you've got the point by now, so I'll shut up!!