20 Most WTF Movie Cameos Of All Time

7. Ron Jeremy - Ghostbusters

While most of these cameos draw overt attention to themselves, this one's pretty sneaky, but once you notice it, watching Ghostbusters will never be the same.

After legendary douchenozzle Walter Peck orders the Ghostbusters' ghost containment unit turned off, an explosion emanates from the firehouse, setting hundreds of ghosts loose throughout New York City.

If you pay close attention during the aftermath of the explosion, one of the bystanders is legendary porn star Ron Jeremy.

He doesn't say anything and is only on-screen for about five seconds, but it's very clearly him, and simply baffling that an adult film star would end up in a film aimed primarily at children. Amazing.