I had a dream once when I was 7 or 8. I was in this walking mech thing, like from the mechwarrior game, and everything around me was completely destroyed. Buildings leveled, the ground was burnt, and the sky was like it was in the Matrix after the war, I believe the term scorched was used. Then I walked around in the mech for awhile, when I realized I was the only person there.
That dream still freaks me out. It leans heavily to the idea that I did it. It really makes me glad that I don't believe in prophecy.