What's the Big Frigin' Difference?!

Stare at these photos carefully and see if you can find the differences between the two.**HINT -- There are THREE differences in the above photographs!** 

Source: http://www.tmz.com/2012/05/13/whats-the-big-frigin-difference-tmz-games-photoshop/

Wolfman Jack Elton John Don Johnson Al Jolson Tom Jones