Before stepping on stage and motivating thousands of Bonnaroo concertgoers to boogie down with his mish-mish oddities, Pittsburgh's Girl Talk, a.k.a. Gregg Gillis, stepped up to the plate at the MLB batting cage backstage with SPIN.com's William Goodman to determine who obtained the highest Bonnaroo ERA. Though neither are big league bound, three dollars and, er, some loose change was laid on the line and the 15-pitch competition heated up faster than the Tennessee sun!