Clerks (1994)

Hilarious, ultra-low budget comedy from film school dropout Kevin Smith
chronicles a day in the life of two convenience store slackers (Brian
O'Halloran and Jeff Anderson).  They spend most of their day ignoring
customers while discussing everything from fellatio to self-fulfillment.
The premise is strictly sitcom and the photography is grainy as all
get-out, but you could spend ten times the film's budget (a reported
$27,000) and still not get dialogue half as good as this.

Originally rated NC-17 for language.  Not recommended for viewers with
sensitive ears.

Grade: B+