This one goes by the name Austin Kleon. Here is is sketching portraits. Met him and a boatload of other super talented folks on the first day of the conference.
Landed in the capital of Texas for SXSW Interactive, my first time attending this monster conference. Bonus image from later in the evening: Dispensing absinthe at Péché, where they serve cocktails with fantastic authenticity and ingredients. (I had a Manhattan with extra fig foam.)