2. The Creepy Face Hiding Under The Bed - Stuck On You
The Farrelly brothers' 2003 comedy Stuck on You is probably the last place you'd expect to find a genuinely unsettling gag, but literally about a minute into the movie, there it is.
As Matt Damon's name flashes up in the credits and the conjoined twins (Damon and Greg Kinnear) rise out of bed, a human face is faintly visible underneath the bed, peering directly into the camera lens.
Apparently, this is one of the movie's executive producers who hid under the bed as a prank, hoping that the Farrellys wouldn't notice, and obviously, they didn't.
This one's incredibly tough to catch and best seen with your TV's brightness cranked all the way up, but in isolation, it looks like it belongs more in a horror movie than a comedy. Yikes.