After Katy Perry and Michael Jackson comes Mariah Carey.
Skip to 2:45 to watch the part with Michael Jackson, although you should watch the whole video, it's quite interesting.
Meet 17 year-old (6'2) super star Kwe Parker, probably the actual best high school dunker in the USA.
This is BBC's cover of The Beach Boys' 'God Only Knows', starring 29 of the biggest names in the music industry.
There's also this video with Karl Pilkington trying polyphonic overtone singing.