From Wired.com:

PITTSBURGH -- A 6-foot-tall robot that courteously steps aside for people, smiles during conversation and politely asks directions shouldn't be blamed for being too eager to please.

After all, it's programmed to act that way.

The robot, named GRACE (short for Graduate Robot Attending Conference), will wander a symposium on artificial intelligence that begins this weekend, where it will demonstrate basic human social skills.