It's like Marmite, you either love it or hate it!
There are so many choices to... choose from! Boy or girl, Good or Evil all that stuff that an RPG is supposed to have and more. There is honestly too much to say! Some of my personal favourites are hacking terminals, making home made weapons and of course using words to make everything go my way.
And who could forget combat? Not experienced much at first in Vault 101 and Megaton, mostly in the heart of what was previously D.C, anyway, when you do get round to it you want more of it. Lots and lots of bloodthirsty combat, nothing feels better than blowing of raider's heads! And with a revolutionary VAT system, you can aim at the part of the body you want to shoot at and it will blast off! It may not sound like much to some readers, but trust me, it is a lot better than it sounds...... 210%.
It's only downsides are it's main features, The Pipboy 3000 is one of them. It is an awesome device but bringing it up every 3 seconds is really frustrating, especially because you do almost everthing through it, heal, repair, move from place to place etc. The other is the huge choice of locations to explore. There are over 100 places to go to but frankly, what's the point? The world is far, far too big.
For possibly years to come, you cannot beat Fallout 3 and it's awesomeness. I would recommend to Elder Scrolls fans, RPGers and those who don't mind lot's of revolting bloodshed!!!