20 obscure and nerdy Halloween costumes

For some, the goal of the Halloween costume is for everyone around them to put their beers (or Snickers) down and ask, "And who exactly are you supposed to be?" While I don't share this predilection (blame lack of imagination: once I was an exit door for Halloween), it's certainly something to appreciate.

Of course, obscure costumes can take so many forms, from popular characters done up in lesser recognized ways to outdated technology to — well, just read on. Listed below 20 of our favorite obscure costumes that highlight creativity, costuming skills and, of course, general neediness. Take a look, enjoy and maybe even steal some ideas.

Have your own obscure costume idea? Think these aren't obscure enough? Let us know in the comments below!

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