Grizzwald Chapman, known to most as Tracy Morgan's massive and endearing sidekick on NBC's '30 Rock,' is in dire need of a kidney transplant, the actor has revealed during a taping of 'The Dr. Oz Show.' Chapman, just 35 years old, says he suffers from severe hypertension, which requires him to receive dialysis three times a week.

'Grizz' and His Pal Dot-Com in Action