Like Steve, my first watch was DOA, it seems to be a fairly common occurrence, but to their credit a new one was sent out pretty quickly. So now, 9 months later, I find I can't rely on mine. About 50% of the time the screen is pixelated to the point where I can't read it which pretty much makes it a useless thing to be carrying around. I've also found the battery to be unpredictable, sometimes it will last a week, sometimes a day and I can't see the pattern behind it.
So at his point I'm calling the Pebble an honourable failure. I actually enjoyed the Kickstarter process, but in this case the end product just wasn't up to scratch.