A few days ago, we reported that a few SNSD members guested on an upcoming episode of SBS's 'Running Man' to fill in for regular castmate Song Ji Hyo. There've been numerous fan accounts and photos floating around, but nothing beats an official preview from the show. The male crew paired up with Seohyun, YoonA, Yuri, Taeyeon, Hyoyeon, and Jessica in a mad scramble across the city. Check out this hilarious preview below, and be sure to tune in for coverage on this hot episode! Tip: Michelle