Two by two, hands of blue.
One of the easy ways of discovering who is a Firefly fan is to show them some blue hands. If they back away in fear, you know they are Browncoats. "Two by two, hands of blue" is repeated by one of the major characters when she senses that these people are coming. They have hands of blue, pretty much like the picture, and can kill you with noise, in a rather painful manner.
However, the hands of blue can be good, when not in the Firefly universe. I've had some doctor visit lately (two hospitals and the dentist), and some of them have been wearing blue gloves (but this is not a G entry, it's for Hands!). I obtained these at one of the hospitals, while I was left alone in the x-ray room for a bit. I mainly got them because I love blue gloves (due to Firefly), and because they were an S. I've only seen them enormous before.
Two by two, hands of blue
Tangentially related to the gloves, and accidentally H, my foot is Healed! When I went last week to the (private) hospital, I got another x-ray, and it showed that the bones had finally bonded together. It only took 5 months. I'm now waiting for the referral to start physiotherapy, as I have no strength or elasticity in my foot. But the bones are finally healed, so we are certainly more than half-way to wearing Heels again.