Benjamin Levy, author of Remember Every Name Every Time, advocates the FACE method: "focus, ask, comment and employ." Focus: Lock in on the person's face. Ask: Inquire which version he prefers ("Is it Ted or Theodore?"). Comment: Say something about the name and cross-reference it in your head ("My college roommate's name was Ted.") Employ: Put the name to use--"Nice seeing you, Ted"--to drive it home.
Repeat, Repeat, Repeat
Repeat, Repeat, Repeat