Man, I can relate to the playing games with your dog stories. When I was 12, I was "too old" to play with Transformers, so I had to play alone, except for my dog, he'd always play. I let him be Bumbledee, or the red one, but I think he really wanted to be a Dinobot. He could make the sounds for a dinobot, but not any laser sounds, and he couldn't make any of them transform except the lame one that you could roll back and let go and it would spring open... except, I had to roll it back for him. Still, we had fun.
As for atypical, eh, I do and don't see my friends I have gamed with as geeks. It just depends. I think we're all cooler than "typical gamer geeks" but I've also felt the shame of Rico trying to explain the basics of roleplaying to total non-gamers. Actual physical pain there. Aside from my friends, I've gamed with many many people, but only once or twice. Most of them were more "typical" than not, but a few stood out. Nothing too spectacular, however. Just a few that you wouldn't think they would ever play a roleplaying game.
And then there's my dad. He's 55, a lieutenant(? i think, i lost track)deputy sheriff, in charge of his own whole divison-thingy, and he plays Everquest. Poor MMORPG taste aside, that's kinda cool. He's a guild leader even, and his guild consists almost entirely of other sheriffs and their families.