When I was 6, I demanded an Apple ][ for Christmas because they had one at school and computers were just so cool. I ended up getting a lower-end computer (Texas Instruments) but from that my love of computers and programming was born. I spent more time on BASIC programming than playing the games.
I'm trying to think when I liked geeky TV shows... my brother of all people introduced me to TNG when I was in high school (this was during the 3rd or 4th season). I have a vague memory of watching an episode of TOS at a friends' house when I was very little (maybe 7 or 8) and it scaring the crap out of me. Not even sure what episode it was but it had to do with a red alert and an asteroid or some other space object getting closer and closer on the view screen.