Robert Osborne

You see a Clint Eastwood movie, and you might not know if it's from Universal or Warner Bros. or another studio. He has affiliations with so many studios now, but there was a time when you'd just look at a movie and think, 'Oh, that's a Warner Bros. film.'

Sometimes it's even hard to tell the difference between a tic and a compulsion. But while tics stem from an urge in a specific part of the body - either completely unconsciously or through a premonitory sensation that's satisfied only by the tic - OCD bubbles up as conscious thoughts in the mind.