I've been working with US entertainment press images for a long time now, and their photoshopping can be EPIC. This one is courtesy of NBC and is pretty typical. I was always taught to use Ps with a deft touch - the concept being that you'd inevitably see the subject of the photo in person/on stage/on screen at some point and they'd be unrecognisable. Which I'd consider bad PR...but then I gave in a long time ago trying to figure out what PRs actually do other than make me work late and miss deadlines... (ouch...)
