If you're up late tonight -- 2 a.m. -- and feeling a little subversive, check out "F**K" (Documentary Channel, DISH Network, DIRECTV video-on-demand or in its entirety online at www.documentarychannel.com).

It features everyone from Pat Boone to Chuck D. to Bill Maher to Alan Keyes discussing the F-word; its origins (despite what you may have heard a king's consent had nothing to do with it), its power, its infamy, its flexibility.

The film takes mostly a light-hearted approach, but some interesting points are raised. For instance, in 2000, the FCC lodged a little more than 100 indecency complaints. During the first years of the Bush administration, under Michael Powell's leadership, that number jumped to more than a million. Politics! Still, points are scored on both sides of the free speech versus indecency debate.

In fact, you could argue the movie is a little too balanced; there's not really a point made, just a lot of talking heads. That makes some of it funny, but it also makes the 90 minutes feel a little long at times.

But as an exploration of a word that can still rile and delight, it's worth a little late night viewing.