1) I thought Seth MacFarlane did an excellent job. I know most of the internet hates him but I thought he was great. He was exactly what you would expect out of Seth MacFarlane: he was crude, he was charming, he sang and danced, and most importantly- he was funny. I adored his opening monologue. I love the jokes at the beginning that were supposed to fail and I couldn't stop laughing at everything involving Capt Kirk. That personified what Seth MacFarlane is: he is both a frat boy and a classy guy. That what you should expect out of MacFarlane. If people didn't like Seth MacFarlane then I don't know what people are expecting out of Oscar hosts.
My favorite MacFarlane joke of the night. After Daniel Day-Lewis won (more below), MacFarlane comes on screen and says, "In order to prepare for this incredible role Daniel Day-Lewis really got inside the 16th President's head. No one has gotten that far inside Lincoln's head since John Wilkes Booth." I laughed hysterically but the crowd did not. MacFarlane's comeback was great as well. "Too soon? Is 150 years not enough time to let that joke fly?" Loved Sethy M and I'll defend his greatness against everyone on the internet.
Apparently hosting the Academy Awards is like being the head coach of the Oakland Raiders: no matter you do you're going to be terrible, you get one year max (two if you're lucky), and everybody remembers and pines for the good old days.