I've been wanting to respond to this thread for a number of days now.
I have only very recently discovered that I am, in fact 'quirky'.
For example a while back friend of mine showed me a photo of myself that he'd taken when we were at school some ten years previously. He then pointed out that I was currently wearing the same jacket as in the photo (something he found to be very amusing). Initially I was stunned, but then once I gathered myself I pointed out to him that it still fitted.
One day, the same friend noticed that I was wearing a pair of more fashionable trainers. I told him that I'd accidentally put on my running trainers today instead of my usual ones. He said that he couldn't believe me: that I wear cheap trainers to walk around in day-to-day and that I only use expensive trainers to run in. I told him that I needed good trainers to run in to avoid injury.
On a similar theme I wear the same suit (I have two copies of it) either a blue or grey jumper of the same style, either a white or blue shirt and any one of six ties. This gives me enough combinations to get through the week.
My girlfriend (who is herself an INTJ and who regularly has the cheek to call ME a geek, claims that I have a problem with wearing inappropriate footwear. I tend to go everywhere in the shoes I wear for work (even though I do own other pairs of shoes - but prefer to use these only for special occasions perhaps once a year).
She has also noticed my tendency to read articles on obscure pieces of information such as Larry Hagman's filmography (I'm sure there was an explanation for that but can't currently remember it).
Overall though, I think I'm pretty normal....
For an INTJ!