You'd never know by listening to Pearl Jam records that lead guitar player Mike McCready might have been in excruciating pain or at risk of losing his bowels at any moment in the studio. Seeing the band live at a large venue like KeyArena probably wouldn't clue you in, either. McCready doesn't play as if he suffers from an inflammatory bowel disease. He's all over the place—running, jumping, and flailing with his guitar. Seeing the......