Let me just say this straight up, I like FO3... right.
The Animations in FO3 are down right bloody ****! They're absolutely CACK! That's not just a matter of opinion, it's all really poor animation, the only time anything begins to look good is when the physics takes over for a corpse... Walk cycles, reloads, the whole lot, absolute amatur tripe.
I still think the game is awesome mind, but the idea anyone could actually comment on the animation scares me... And don't get me started on the rendering, and artwork.
Basically the game is "Technically" an absolute turd.
I don't think it has head tracking, and you do look very mannequin-ish when you observe you character doing something from head on. Same as every Bethesta Game though, it's certainly not worse than Oblivion, and it looks quite fine in the usual over the shoulder mode. You don't notice the lack of variety so much. There are no idle animations either, well some of the NPCs smoke cigarettes or hold cups, but that's about it.