The MPAA has never revealed its guidelines for what qualifies a movie for a G, PG, PG-13, R or even the dreaded NC-17 rating, but Hollywood producers have a second sense for the tipping points between categories.

WSJ: Roger Ebert on Movie Ratings

Rep. Darrell Issa, R-California, sent a 17-page memo and a draft contempt resolution to members of his committee Thursday, outlining what he argued was Justice Department's "refusal" to comply with the panel's probe to get information about the sting.

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President Clinton used Washington's most recognizable set, the White House, to announce that most cinema owners had agreed to require young people to show photo IDs when they ask for tickets to R-rated movies (an R rating means those under 17 must be accompanied by a parent or adult guardian).

CNN: Taking aim at show biz

In theory, members of the National Association of Theater Owners agree not to sell tickets to R-rated films to those under 17, unless accompanied by the proverbial parent or adult guardian.

WSJ: Roger Ebert on Movie Ratings

State Senator Pete Kelly, R-Fairbanks, introduced the bill, SB 74, Feb. 17.

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Because most newspapers won't advertise NC-17 films, studios do almost anything to ensure that their movies get an R rating.

CNN: Taking aim at show biz