While making your way through the large office building, look for papers 
hung on the wall or scattered on
desks. Many of these papers have "TPS Report" written on them, as well as a 
symbol including three boxes
at the top. This is a reference to the popular movie Office Space in which 
the characters are involved with
TPS reports at their office, Initech, which has almost the same logo as the 
symbol at the top of the papers.
While making your way through the large office building, about midway 
through the level there should be a
large room filled with cubicles, with multiple offices on the side. One of 
the cubicles in the middle of the room
has a lot of boxes piled into it, with a red stapler on the desk. This is in 
reference to the character Milton in
Office Space. Management is always making Milton move his desk and using his 
area for storage, as well
as stealing his red Swingline stapler. This can be found in the same area as 
the multiple TPS reports.