I just had cause to have a lengthy, off-the-record chat with one of our newer employees. He said that he was stunned over the atmosphere in the office. Everywhere else he's ever worked there's been underlying, very gentle grumbling, even if people were generally happy.
By contrast, he says that the overwhelming feeling he's getting with us is one of enthusiasm, interest, engagement and general contentment with the work, the people and the place. He feels welcome, part of the team, and is amazed at the general sense of good will.
And we have Dilberts strips pinned up in lots of places, partly because some of them are funny, and perhaps partly because we are pleased they're not us.
I've mostly seen offices where people were using Dilbert strips to illustrate their own life in the office.
EDIT: For example this one appeared in one of my previous companies after owners hired a "visionary" CEO: http://www.dilbert.com/2004-04-17/
It's the same with all the "629 signs your company is XXX" - they are guidelines, indications, suggestions, and sometimes wrong. There are very few absolutes.
Remember, Bayesian spam filters work because they look for several indicators, good and bad, and combine them. The simply black/white, yes/no indications of whitelists and blacklists don't work as well as taking several indicators into account.