On the second floor corridor of the PD, click the bulletin board with the hand icon many times (there's a small chance that it occurs) for a reference to the game's programmers Doug Oldfield, Chris Hoyt, Kim Bowdish and Mike Larson.
In the homicide office, click the bulletin board with the eye icon many times (there's a small chance that it occurs) for a reference to the game's programmers Doug Oldfield, Chris Hoyt, Kim Bowdish and Mike Larson.