Game of the year? Maybe, maybe not, but solid overall.
The story is also decent too. However it isn't the overall the story but how you can play through the story that is the stronger part. You can end up skipping parts of the story just randomly exploring the map. Now some of you might not like this, but I find it fascinating that through your own free will you can advance the story how you want and not be stuck in a linear plot in an "open" world. And the story has enough in it to make you want to play through the end, regardless of what parts you do/don't see.
As part of any Bethesda game, the voice acting is superb. And though it isn't always perfectly in tune w/ the characters mouths, the variance of voices throughout the entire game is just fantastic. It really helps to create a huge game world where you don't have to listen to the same voice 5 times over and helps uniquely create locations and people. The music is also fantastic and picks up at the tense moments and drops off to howling wind or a faint radio signal at other times. Brilliant!
Overall this is a game you MUST play if you are an RPG fan, an Elder Scrolls fan, or just love to pour in 30+ hours to an RPG. You can easily lose yourself in the DC Wasteland for hours at a time and Fallout 3 will always leave you wanting to come back for more.