Jon Ferguson is an English-born playwright who wowed Fringe Festival audiences with his debut here, 2005’s Please Don’t Blow Up Mr. Boban with Live Action Set. A wife, baby and several plays later, Ferguson gets his first show at the Guthrie this weekend, when his Super Monkey premieres in the Dowling Studio. 3-Minute Egg went to a rehearsal and spoke with Ferguson about his process. Performances run through October 4.