seven famous people I've met

[totient]

Another meme! This is the seven truths and a lie meme, famous people I've met submeme. Which one of these have I not actually met?

• Samuel R. Delaney
  
• Richard Feynman
  
• Neil Gaiman (before he was dating Amanda Palmer)
  
• Steven Jay Gould
  
• Amanda Palmer (before she was dating Neil Gaiman)
  
• Fred Pohl
  
• Sally Ride
  
• John Scalzi

(comments screened, because I can.)