A clever design that does something in a new way is something we appreciate 'round these parts. This time? The humble zipper is up. Keep your hoodie zipped up, and you'll just see a hand. Zipped down a bit, and you've got the Vulcans' customary greeting.
"Traditional Greeting" comes from Paulo Bruno, who's put it up on Threadless. If you know anything about Threadless, then you know you can expect a cool pattern, but for a price: $40.
Also, can we say how nice it is to have a geeky piece of clothing we actually wouldn't mind being seen in? "Traditional Greeting" is as subtle as it is smart, and a fine tribute to Star Trek.