Simply brilliant - but might not be for everyone...
True enough, it offers almost limitless freedom of actions, perhaps more than Oblivion ever did. You explore huge devastated city, with no chance to ruin something for yourself if you get there ahead of time. Nice implementation of VATS - they found use for those old turn based action points, to placate old fallout fans no doubt. Amazing soundtracks and 2008 graphic at its best. Voicing isn't bad either, at least much better than Oblivion is.
None so far, beside little accidental crashes, but happens VERY rare. Some small items a little bit easy to miss, but I guess it's part of realism.
The Bottom Line
98% of people will love it, as its unmistakably best mix of RPG and FPS yet, but then again, those 2% who like the pure genre (skipping through talking, or finding it to be too much of an action game) will absolutely hate it. Oh and don't let anyone say it's short, there is no way one can skip through it in 7 hours unless maybe they sit with a guide in their lap and skip all conversations in mindless effort to pass it in record time (and even then I doubt it possible without cheating). Absolutely worth time spent - hopefully they will release add-ons, it seems to be build pretty much like Oblivion, with .esm files loading at start.