I was playing Sonic Riders Zero Gravity, and I was doing the whole grand prix thing, and I was leaning forward in my chair, and I was coming up on the finish line, and suddenly, my chair fell forward with me in it and I was on the ground, bending my neck as far back as I could so I could see the TV screen, and my dad and my sister ran forward and picked up the chair (with me still in it), and they said "Are you alright?" And I said "I GOT FIRST PLACE! YEEEEESSSSS!!!!" Ah, memories...
I do that. I also tilt my controller left and right when I'm playing a racing game ._. Even though it adds nothing to the game (Unless the game has motion controls support)