you should watch American Graffiti if you haven't seen it. Richard Dreyfuss and Ron Howard are the leads, but it was a breakthrough role for Harrison Ford as the racer / hot rod driving guy (probably the inspiration for Matthew McCaughnehey in Dazed and Confused). Cindy Williams had a big role too. A lot of people who became cultural icons and actors in the 70s got exposure there (Suzanne Somers has a key role). Coppola produced, Lucas directed.
Yep, fantastic movie. It's been years since I've seen it all the way through.
