Halfway through James Judd's entertaining 75-minute solo show at Theatre Rhinoceros' studio, it dawns on you: Who the hell is this guy and why am I laughing so hard? While autobiographical one-person shows are nothing new, it's one thing to keep an audience's attention when you're someone famous like Carrie Fisher (whose run at the Berkeley Rep just ended), and quite another when you're a nobody. Judd, the nobody in question here, gets the audience to root for him as he recounts his life's not-so-serious struggles, from his ill-fated attempt in the fifth grade to be honored for giving the best book report (he unwisely chose My Search for Patty Hearst) to his stint as a stand-up comedian working in sleazy Las Vegas hotels. Along the way, he always manages to say something during his misadventures that, in retrospect, he knows he probably shouldn't have. After a man sitting next to him on the ski lift boasts that his woman is waiting for him at the hotel, Judd, who is gay, retorts that his boyfriend is at home doing his taxes. "I'm going to get a blow job and a refund," he gloats. 7 Sins began years ago as a group show; Judd later adapted it for himself and kept the title, which is somewhat misleading. The deadly sins play, at most, a marginal role in his personal stories. The second half of the show wanders some and could be tightened, but in the end, you'll still leave with a smile on your face.