In one of the other offices here in the same building as Mozilla headquarters, one can see this desk from the outside. I kid you not, this is a 1998 book on Building COM Applications with Internet Explorer. It makes me smile everytime I walk by. Of course, one would hope this person does not actually use this as a daily reference -- but given that the book stands next to what I believe is an Opera logo, it is probably meant as a joke. Well played!
This is probably by far the worst-quality photo I have had in my project 365 so far (do not look at it at full size), and I apologize. But the subject was just too good to pass up on.