Spotted on the hudson river path: Malcolm Gladwell.

Carlos Leon and his chick biking side by side down west side hwy bike path... So much cuter than if he were w Madonna hogging the limelight

I just saw David Bryne on the Hudson River bikepath. He walks the talk - or bikes the bike, if you will.

Men's Health Editor David Zinczenko looking v fit running shirtless in Hudson River Park by Vestry.

Jesse Eisenberg (Adventureland) on his bike riding down Hudson River Park looking v athletic.