Eight Forty-Eight takes a look at architect Robert A.M. Stern, winner of the 2011 Richard H. Driehaus Prize for Classical Architecture. And host Alison Cuddy pays tribute to the late, great blues musician Pinetop Perkins, who passed away earlier this week. Then Ethan Spotts from the Active Transportation Alliance shares his ideas for an environmentally friendly weekend in the latest installment of The Weekly Guide. And legendary DJ Jesse De La Pena returns to spin live throughout the show for the Friday DJ series. He also discusses his new role as music curator for Vocalo.org 89.5 FM.