I watched the conference on twitch by chance. The hype was real, Doom both blew me away, and disappointed me : it's more "shoot them up" than Doom III, closer to what the original Doom was (levels full of enemies) but then again they might have just showcased the engine. I liked having somewhat of a story in Doom III, maybe the new Doom will keep the formula. I expect multiplayer to be disappointing, because the engine is not really that interesting in Doom, but the in-game editor might be super fun.
As for FallOut, I must say I have never really tried the franchise and have always kept on playing the elders scrolls games only. I have watched friends play FallOut3 and I don't know, it didn't attract me back then, and I never played any of them. So from my virgin eyes , I am quite underwhelmed by the graphics to be honest. I actually understood halfway through the trailer that it was actually the new one, and not FO3. But the atmosphere quite caught me, and I will jump on the wagon on this one, I totally trust Bethesda as a whole, and I know I am missing out already from the whole franchise, so I will not pass this one.
EDIT : for those who wondered, as apparently this was a rumor, you can play a female character indeed.