In comparison with even the average nerdy type, I am nothing particularly special so it’s hard to say what is the nerdiest thing about me.
Maybe my extensive collection of Visual Effects books. Or my plan to make a steampunk short film. Or my frustration that Disney’s Gummi Bears has only been partially released on DVD.
Eh. Not so nerdy.
Oh wait, I know what makes me nerdy. One day when I win the lottery, my dream house will be designed to evoke a mediaeval castle, without being overtly fairy-tale cheesy.
Also, spelling it “mediaeval” makes me nerdy.
There are nerd groupies?
I am not even close to being as mathematical as some in this thread, but I do speak Esperanto, and I’m writing a story based on a Minecraft world I made a few months ago.
An over-fondness for macaronic puns. Here’s a favorite example:
Q. According to Sigmund Freud, what comes between fear and sex?
A. Fünf.
Gyrate, that’s a great joke…I have to remember that.
Well, some of these are pretty funny. I guess I can add of few more of my nerdy qualities, aside from my one in the OP, though none but the first are likely to stand out at all here.
I created my own writing system. It’s in English, but is a different alphabet. It has evolved over the years, and is now pretty unique. There are 33 letters (with single letters for some combinations such as ‘th’ or ‘ng’). Vowels have letters when used in acronyms or by themselves, but when used in words with consonants, all vowels become accent marks. So, a word will consist only of consonants with a bunch of accent marks surrounding them. This makes it have the appearance almost like a cross between Greek and Arabic. Also, double letters are written with a single letter and a specific accent mark below the letter.
I build my own computers (I know this is likely very common here). My current machine is my 6th build, and I have motherboards and components from about 5 different machines shoved in various locations in my closet.
I used to write elaborate calculator programs on my TI-85, including games and other such fun. I don’t do that anymore, though.
Lots of general nerdy things, like reading the encyclopedia for fun (now Wikipedia mostly), watching shows like How It’s Made for fun (and wishing they went more in-depth), etc.
Note: I’m sort of a nerd in hiding: I don’t look nerdy (I’m a big guy, bald with a goatee…)…I love sports and hiking and camping and those sorts of things…but talk to me for a few minutes and you’ll see it come out in spades. 
You have free time travel? Can I get some? Wanna see some dinosaurs.
I had a conversation with a friend at the end of 2010 over what our favorite movies of the year were. I had trouble thinking of what movies I had seen and got frustrated. As of January 1, 2011, I have kept a spreadsheet containing the name of every movie I’ve watched for the first time (only counting movies I watch in their entirety) along with a rating between 1 (awful) and 5 (amazing). I also have a few charts detailing the number of movies by rating and also by month.
I’ve seen 39 movies so far this year, none have gotten 5 stars. Only one got five stars last year (The King’s Speech, if you’re interested).
As a youngster, I enjoyed the Mushroom Planet books over Danny Dunn, and I thought Tom Swift’s sister Sandy was hot.
I could quote Star Trek lines the day after the new episode aired, and wore an Evil Mr. Spock button (made on a Mad Fad buttonmaker machine) 4 weeks after that episode came out.
I could quote entire chapters of Everything you wanted to know about sex but were afraid to ask.
In 11th grade, in the midst of Watergate, I did my US History class presentation on the Teapot Dome scandal.
I learned to program in FORTRAN that year.
I guess my four game show victories with an undefeated record. I guess that’s more “smart” than “nerdy.” YMMV. I’m fairly athletically inept, though I enjoy watching sports.
I don’t belong to any fandoms, retain only a cursory knowledge of HS and college Latin, and don’t like sci-fi or fantasy stuff. Or roleplaying games. Maybe I’m not a nerd, then?
Nope, wait. My occupation: college professor. Guess I’m in the club.
You beat me - I just have the license (General class).
I listed Morse code, BASIC and Pascal as languages on my college applications.
Retired. More or less. I still have a couple of things going on in the background.
All this WoW stuff is too … normal. A couple days ago I played Nethack. Old style, in ASCII graphics. Got to the 10th level just futzing around. (I also know a guy, even published some papers with him, that’s in the credits for the game.)
And another thing … I have two working Betamax VCRs. How else am I supposed to watch my copy of Sebastian? (That’s another nerd reference right there.)
I’m not sure if this qualifies as nerdy. I am female almost 50 years old and love watching shows about cars such as Wheeler Dealer. If I see a car parked somewhere that I like - I take a picture of it with my cell phone. Last night I spent over an hour browsing at google images of Austin Healey models from the 60’s and also MGB’s …late 60’s early 70’s. Does that make me a nerd? I have no idea… I can easily do the same with scooters :D.
I ride a scooter. And I play ukulele.
[QUOTE=Qadgop the Mercotan]
I learned to program in FORTRAN that year.
[/QUOTE]
If you ever get tired of being a doctor, let me know. We have to teach would-be programmers FORTRAN as it’s not being taught in schools.
I am a “wannabe” nerd…so I hang out here being a devote to you ALL. 
Two weeks a year though i earn my NERD pocket protector status. I take two weeks off EVERY year starting the first Saturday in March to intensively follow the Iditarod. I follow most other Long distance sled dog races every year but this is my (our) WorldSeriesSuperBowlFinalFourGrandSlam all wrapped up in a 1049 mile race.
I dont do a lot of number crunching (some) at work but during the race I can tell you the “run/rest cycle”, time in/out of check points, and am pretty dang good at pulling up race stats from any of the 39 previous races…
So I guess two weeks a year I am an IditaNerd ®
I don’t mean it’s not nerdy for you in particular, I mean it isn’t nerdy for anyone who plays it. When Hollywood hotties like Mila Kunis admit to playing it, it loses nerd cred. Playing WoW is about as nerdy as playing ultimate frisbee.
Hey, I know FORTRAN! Um, err, FORTRAN II. Any jobs out there for that?
Your point is that Google is more of a nerd than I am? I don’t know if that really counts.
I’m 49 years old and have a total level 2315 in Runescape.
And you look damn sexy doing both, darling. ;)