Macworld Expo SF: "This is my Mecca"

Mark, our lead programmer here at The RSG, is the biggest Mac fanatic on the planet. You have no idea. Anyways, he took a few days off from MailChimp programming (yeah, we unchain him from the desk every now and then) to go to Macworld Expo in San Francisco. He called us yesterday and was so giddy (in that really funny, nerdy kind of way) and said to us, "This is my Mecca." We actually caught a glimpse of him on the MacRumors site. Here's a little help identifying him in that crowd. Have fun, Mark!