I watched her set last night and I was seriously impressed. Her stage presence was awesome and I loved her interaction with the crowd. The atmosphere during Run This Town, We Found Love and Umbrella seemed amazing.
She sang Love The Way You Lie beautifully. I liked the whole tribal theme of the set, very imaginative.
I went to Radio 1's Big Weekend in Carlisle last year. It was so amazing.

Watching Rihanna's set made me wish I was back there.