Best: Bruno Mars and the Red Hot Chili Peppers, 2014
In 2014, Bruno Mars showed up on stage to set it on fire. The show kicked off with teenagers singing. He then proceeded to steal the spotlight from them as he tried to play John Lennon on the drums. This talented singer belted his heart out and danced as well as any man could. What made it even better was the surprise appearance of the Red Hot Chili Peppers. No one expected to see them there! The members ripped off their shirts and began to jump around to the hit song. It was an odd choice, but it worked.