I also find Head's up very exciting as there is a lot more aggression in the playing style, and you have to be able to call a lot more often, or just fold pre-flop, I was once heads up in a live game with around 90% of the chips and when the dealer dealt the cards, I refused to look at them until my opponent made his play as it was up to him to play first.
He pushed all-in with a Big Slick (A/K) and I immediately called without looking at my hole cards, the other player laughed when he saw my 6/2 unsuited, turned over by the dealer, but stopped laughing when I paired my 2 and beat him. He asked me why I had called with such bad hole cards and I said "any two cards can win heads up, and I never look when I have such a big lead over my opponent" I would have folded the winning hand if I had looked at it.
Some might say I was playing stupid, or just plain Crazy! But to be totally honest I would have been happy losing 10% of my chips had I lost, sometimes you have to trust in the Poker Gods and Luck!
When the fun Stops, STOP!