No, that's not photoshopped - it's a real photo of bodybuilder Greg Valentino, who has a 27-inch arm in his peak. He was featured in the recent The Learning Channel documentary on steroids and bodybuilding.
From a very honest 2002 interview with T-Nation on using steroids, its side effects, and going to jail for dealing steroids.
A tale on how steroids can really screw you up bad. Real bad. A very interesting read: Chris Shugart interviews Greg Valentino
Tokyoflash Treasure Hunt - Win a Tokyoflash Watch of Your Choice!
Going on right now: Tokyoflash Treasure Hunt #26. Win a Tokyoflash watch and neat stuff from the NeatoShop. It's fun and easy to play: Link