The face you make as you fire off your little "grand finale" is nature's way of knocking you down a peg after potentially ego-inflating sex. In the service of science, here are some classic examples. By Eric Alt

Drew, <em>Office Space</em></strong>- What better way to start than with the man who deserves credit for popularizing the term "Oh Face" to begin with? You know what we're talkin' about… And Drew isn't bashful about it, either. The man takes obvious pride in his Oh face. Ladies, you should be so lucky to see it firsthand…

<strong>Arthur Stuart and Curt Wild - <em>Velvet Goldmine</em></strong>- While Curt's eyes-rolled-back-in-his-head money shot makes this list-worthy on its own, we also wanted to include this in order to torment fanboys. You see, that's Ewan McGregor and Christian Bale. Yep, Obi-Wan Kenobi taking Batman to brown town. Just let that marinate in your noggins for a while…

<strong>Matilda Jeffries and Hansel, <em>Zoolander</em></strong>- A guy. A girl. Some exotic teas and scented candles. Another guy. Several dwarves. A Maori tribesman. You know what that spells, right? A one-way trip to Pleasuretown. Now note the contrast: Matilda looks hotter than ever in mid-orgasm. Hansel, however? He looks like he just smelled what the Rock is cooking. Nature's an asshole.

<strong>Otto, <em>A Fish Called Wanda</em></strong><br>- Otto's lovemaking technique—hammering away like a meth-addicted rabbit while spouting Italian gibberish—unexpectedly ends softly… quietly… and with a face so ridiculous it snagged Kevin Kline an Oscar. No shit.

<strong>Dave Chappelle, <em>Chappelle's Show</em></strong>- From the classic "Wrap it Up" sketch, Dave Chappelle proves that even a man who acts goofy for a living can't top his own baby-grimace. No need to hit that "wrap it up" button, girl, we think Dave's done for the night after this.

<strong>Marcus Graham, <em>Boomerang</em></strong><br>- We can understand Marcus' problem here—just typing the words "nude Robin Givens" had us ready to send up an ol' signal flare—but c'mon, man. You look like a marlin or a self-immolating Chinese demigod, at least.

<strong>Sarah Marshall and Aldous Snow, <em>Forgetting Sarah Marshall</em></strong>- Rock stars and actresses are paid to look cool at all times, so it's probably a good thing that they save their kabuki sex faces for behind closed doors (or at least for downloadable sex tapes). Not that we think Sarah/Kristen Bell is hurting her image at all (can she ever not be adorable?)—it's Aldous/Russell Brand who looks like he escaped from a Tim Burton movie.