3. 50 Cent
Nobody picked the superstar rapper as a lip syncer. Of course, Mr Cent has never admitted that the reason he stopped performing mid-song at the BET awards was because a vocal track failed.
He claims he was bumped by a dancer on a trapeze which caused him to lose concentration. He needed time to recover and so after singing a few lines, he stopped abruptly and walked into the audience spending the rest of the song shaking hands with fans.