I think I would have been much more of a nerd when I was younger, but for the fact that my circle of 8 or so close friends (we all went to the same school and lived down the same street) weren't as into it as I was. Sure, they all liked playing games, and I have lots of fun memories of taking our computers and consoles around to each others houses when our parents were out of the house and playing some couch multi-player, but none of them were quite into it as much as I was (I was definitely the main singer-song writer in that little Sega song duo). Sometimes I think it's a shame that I didn't have an equally nerdy friend, but maybe it's for the best, as I ended up having a more rounded childhood with my friends always dragging me out to go outside and play football etc.
I think the lack of media back then (not just games, but the limited access to books, music, movies etc) meant that you ended up re-watching/playing endlessly, leaving a really strong impression. I remember watching the Blackadder and Young Ones (old UK comedies) so many times that I had pretty much memorised every single line. If you were to play the first 5 mintues and then turn the sound off, I'm pretty sure I could still say many of the lines even today.
I really liked drawing as well. I remember drawing the Simpsons, Sonic, and the Wipeout cars. The first Sonic really left a big impression, as I was super hyped for the game, but never actually saw it in action until the first time I stuck the cartridge into my Megadrive (as was normal in the magazine era). That first level, just wow! I spent a lot of time after completing the game sketching out the levels on A3 paper (turned to landscape) and also creating my own levels. I even designed my own point and click adventure game (on paper anyway) after having completed Monkey Island. That reminds me, I sometimes regret throwing all my old magazines away, but then I remember that I used to cut out the screenshots and use them to create my own magazine, complete with reviews of the games I had played, tips etc. Good times!
I sometimes wonder whether or not kids have the same experience today. With a pretty much unlimited supply of games and TV available at the click of the button, do they ever get the chance to get obsessed with one single movie/game/book, or do they just keep moving on to the newest thing? Sometimes boredom can really spark creativity.