Dom DeLuise to Billy Crystal in 6 Steps
- Dom DeLuise appeared in an episode of The Ghost and Mrs. Muir
- The Ghost and Mrs. Muir features an appearance by Harry Nilsson
- Harry Nilsson produced Popeye
- Popeye features an appearance by Robin Williams
- Robin Williams appears in Robin Williams: Come Inside My Mind
- Robin Williams: Come Inside My Mind features an appearance by Billy Crystal