In this exclusive clip from Disney's Phineas and Ferb: Across the 2nd Dimension, Guns N' Roses and Velvet Revolver guitar hero Slash flips a switch on his amp that turns him into a cartoon character. Upon entering the animated zone, he jams out with the show's protagonists on a tune called "Kick It Up A Notch" before a huge stadium crowd. To catch the full song, tune in to the tv movie when it premieres at 8 p.m. on the Disney Channel on Friday, August 5th.