If you want to see a performance that is impressive, inspiring and moving check out Paul Potts and his performances in this talent contest in Britain.
The youtube hits near 5 million for his audition. He is a very ordinary shy guy with a terrific talent and a new million pound contract with Simon Cowell's record company.
The stuff of movies is in this story.
http://www.paulpottsofficial.com/
Start at the bottom of the videos for his audition June 7th - this is on you tube as well.