Cityfile: New York's Most Notable and Influential

• Meet the heavyweight political donors who live at River House.
• Have you looked inside Natalie Portman's apartment?
• Henry Kravis gave $5 million to charity last year. And he's still smiling despite the economy.
  
• Have you called George Whipple, Tom Colicchio, Jon Tisch, Cynthia Nixon, and Nathan Lane recently? We did.
  
• Jason Pomeranc's hotel has been delayed many times. But he's had other things on his mind.
• Have you heard about the Manhattan doctor who spent $10,000 on his dog's bark mitzvah?
• Meet Devorah Rose, New York's most relentless social climber.
  
• Nancy Jarecki's rather unusual new ad campaign.

Voicemail at the "residence" of George Whipple.

Previously: Tom Colicchio, Cynthia Nixon, Jonathan Tisch, Nathan Lane, Hamish Bowles, Victoria Gotti,  John Leguizamo, Carl and Gail Icahn, James Lipton, Dylan Lauren, Andre Balazs, Atoosa Rubenstein, Simon Doonan and Jonathan Adler, Lewis Black, Katie Couric, and Tinsley Mortimer.