I spent a lot of time playing with computers as a kid. I remember everything from the 8088 to the 486, the first Pentiums and roughly up to the gigahertz days. Now, life keeps me busy enough that I just want them to work (and my parents to quit calling for tech support).
When I wasn't on the computer, I was usually reading or playing RPG's with my friends. I don't spent much time doing that anymore but it definitely improved my writing. My interest in making up realistic people/characters led to learning more about the world (as it was and is now) and acted as a nice focus for my interest in what makes people tick.
If you prefer labels, I'm a bit of a geek, a bit of a nerd (there's a difference), a gamer, and an IT professional. I'd also like to think I'm a comedian and philosopher, but I usually only give myself those labels when I'm feeling particularly awesome (and likely need my ego-bubble burst).
Now that I'm in a professional career though, I really feel like my strengths lay in soaking up knowledge. I do okay at applying that knowledge, but I feel happier learning stuff in lectures and writing about it than going out into the world and doing stuff with it. I also enjoy sharing what I've learned. While in college I considered becoming a teacher but went in a different direction because teacher pay sucks and standing in front of a classroom of 30 evil brats scares me a bit. Even then, I was more interested in teaching people my own age. I think that's partly because, by then, people WANT to learn and aren't being FORCED to learn.
In person, I think people notice my size first. When you're as big as I am, that's just how it goes. Once they get past that, maybe they'll notice my eyes. Or the way I dress. And after a while, they hopefully start to notice the things that I think they'd see first online.
Online (or via phone), I'd say that my voice is the first thing. I think this probably applies to speech as well as text. I just have a certain way of talking (and strangely, I get complimented on my voice). I'd like them to think I'm funny, as laughter is important to me.
... Hanging out with friends in a small casual setting is comfortable for you.
... A night in watching a movie with some popcorn and beer/wine sounds like fun.
... A night in playing video games (or board games, or some other sort of game) with some take-out sounds fantastic. (I'm usually realistic, but a man can dream.)