By the way Dem there's an American graffiti sequel, (More american graffiti) but i've never seen it, enjoyed the original but the sequels probably shite.
Also Lucas's film THX1138 is worth watching if you've never seen it.
Although that too has been Lucasfied (ie he twatted about with it years later) in newer releases.
Still i enjoyed it when i saw it and it has Donald Pleasance so it's worth checking out.
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MIKE: I've got it! Peter Cushing! We've got to drive a stake through his heart!
VYVYAN: Great! I'll get the car!
NEIL: I'll get a cushion.