The need to compete did sneak up on Johnson in the oddest of ways recently, though. Survivor is one of his favorite shows. And he wanted to be on it. So he went out back on the private beach, Rhonda with the video camera, and explained to the producers why he should be allowed even though he worked for a rival network. He filled out thick files of paperwork and signed contracts. He got his yellow-fever shots. And he was headed to Africa for 45 days of seclusion when the doctor called about some of his tests. One artery to his heart was totally blocked, another blocked 70 percent. He wouldn’t be going anywhere. He has lost 30 pounds since.