My girlfriend is a doctor, and I can confirm that doctors will do just about anything for free food. Mainly this means sitting through a 2-hour spiel about new drug X.

Although sometimes the food is better, oftentimes I'd much rather have decent pizza than the mass-produced crap they serve.

(And she's a No Free Luncher, so we don't do these anymore, and she doesn't eat the free food in the hospital that everyone else does. Somehow, everyone is the one that isn't affected by the advertising.

Maybe Microsoft should start sending reps around to software shops with free lunch? I bet it'd be an effective strategy.)