A while back, I was reading through the comments on an Ask a Manager post (can't figure out which one now) and there was a long side conversation about displaying diplomas in your office. Opinions varied, but most of the commentators thought that displaying them was pretentious/obnoxious.
I have my diplomas and my professional certifications displayed in my office. My parents' graduation present was to get the fancy frame for both degrees, and they don't fit anywhere at home, so I brought them to the office.
When I first read that commentary on AAM, I thought, "oh, it's different for us scientific folks. We display everything!" Then I got curious and did a survey of the scientists and engineers I work with. Hardly anyone displays their diplomas, and only about half display their professional certifications.
Hmm. Does this make me pretentious?