90210 Pictures from "Model Behavior" Matt Richenthal at October 1, 2008 12:18 pm. Comments What was your favorite moment from last night's 90210? A strung-out Adrianna buying drugs? Dixon laying the smack down on a racist moron?Here's a look back at "Model Behavior," via a photo montage. Click on the thumbnails below for higher resolution pictures... Edit Delete Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.