Can Claire's blood bring people back from the dead? The only time I remember the magical blood transfusion being used was when Nathan was crispy and almost dead and Adam saved his life. I was always under the assumption that Claire/Adam could only heal wounds, not be Jesus or turn people into zombies.
I'm fully expecting Nathan/Sylar to start waking up as someone else... Then developing a split personality where he's both Nathan and Sylar... Then having Sylar emerge completely to wreak havoc on the world once again...
In their defense, if you are in a situation and completely panicked and emotional you might not necessarily think of all the possible alternatives and what you could do, but instead you work with what you have in front of you and Angela was completely and utterly positive that it had to be Matt that saved Nathan she wouldn't even consider any other option. Though they will most definitely be regretting that decision in the future, but it would be nice if the writers actually showed in the future how Angela and Noah realize that they acted rashly and without much thought and that they now realize they could have just used Claire to save Nathan and have been done with Sylar once and for all. But, I personally love Sylar so I am glad they took this route instead.
Apparently according to the writer's bible or in-house rules or whatever, they aren't allowed to pull that trick again-they've already used it twice. They need the very real threat of death in the universe. (After that plane went down, I'm not quite sure who else was on it, but I'd swear I saw Maya :( ) I didn't like the final solution at first, but the more I think of it, the more I like it. Just hope Zachary Quinto and Adrian Pasdar get along well X D