In the "Communications" level of Doom 3, you can pick up a PDA belonging to someone called Rob Finch. One of the emails reads as follows:

From: Brent Davis

Subject: Quiz Night

Date: 11-14-2145

Finchy,

Don't forget that Trivia Quiz Night is this Wednesday. Do yourself a favor and brush up on the Shakespeare, mate. If we lose to those twits in Administration again, we'll never hear the end of it.

Brent

This message is an obvious reference to the popular British TV series "The Office", in which the characters David Brent and Chris Finch compete fiercely in a company trivia tournament. Evidently, the developers of this game are fans.