It seems like everyone thinks of themselves as nerds these days, but I would say a good measuring stick would be if the shows you like make popular card sets. I don't know how being a nerd got so popular (which is actually oximoronic) but it's annoying.
This is an awesome article about why you're not a nerd!
You're not a nerd, geeks aren't sexy and you don't "#@#@#@#@ing love" science.