Let the software install wizard jokes fly! What you're looking at above is Gandalf, played by Ian McKellen, using his MacBook Pro while taking a break during filming of The Hobbit.
Naturally, the photo has inspired a slew of photoshopping and other creative spoofs. This one in particular is pretty good, courtesy of nufound.tumblr.com.
You can check out some more spoofs over here.
Apple MacBook Pro 13-inch (early 2015)