Barbara Streisand, Miley Cyrus, and Justin Homo really did nothing for that song. In fact they alone probably caused 1 million people to leave because of it and they missed out on some really great performers.
I really liked:
Celine Dion and Fergie duet. Played well together.
Pink. Definitely not a fan, but that was good.
5:51. That whole group. I'm not a rap/R&B fan, so i can't tell you who they were, but it added a good moment to the song and almost bordered on the hard rock/heavy metal sound.
Tony Bennett.
Also... I swear to god i saw Tracy Morgan at one point rapping, but i couldn't go back and find him. Also... i didn't know Randy Jackson did something without getting paid?!