best supporting actor to j. k simmons and best supporting actress to patricia arquette for "boyhood." let's talk about neil patrick harris. there are a lot of mixed reviews coming in for his role as host. the opening number was spectacular. there was a sort of holographic image that went along with him on stage. then of course there was the funny moment of his imitation of "birdman" where he walked out in his underwear on the oscar stage, surprising many people. some critics, though, believe his jokes fell flat. one person, who was not flat at all, lady gaga. my goodness. what a performance. ♪ the songs they have sung ♪ >> reporter: lady gaga and julie andrews on stage together for the 50th anniversary of "sound of music." we saw a lot of stars walking the red carpet. many of them back here celebrating, holding their oscars in hand. i have a feeling it's going to be a very, very late night or early morning, i should say. a lot of people are not going to be sleeping, reena and t.j. >> i think you are right. there was just as much, if not