Looking at the pictures and video of Obama at the WHCA Dinner on April 30, 2011, you can clearly see he has a fresh haircut with no hair around his ears. There is also not a spot of gray hair.
Here's that video:

[link to www.youtube.com]

Nevertheless, only 1 day later in the situation room picture, you can clearly see copious hair around his ears as well as gray hair. 2x magnification is helpful. Focus on the hair right above the ears.

[link to www.dailymail.co.uk] (second picture down)

Unless Obama has a working time machine, then this is a complete fantasy.