Did you guess tiling? Holy crapola, Einstein, you are genius!
I had really really really wanted to lay my tile in a herringbone pattern, but the more I thought about it, the more that seemed like too much trouble. I worried that I might regret not trying it out, but after putting in around 12 hours of tiling today, I realize how time and labor intensive it would have been and I can say that I'm loving my back splash one hundred percent and I have zero regrets.
So far I've done two and a half walls and hope to finish up laying them tomorrow. I'll probably grout them mid-week. You have to see the full effect of the tile with the counter top (and right now the counter top is covered in painter's paper and... you guessed it, cardboard!). When I do my week in review, I'll post a picture that captures it all, but in the mean time, here's a teaser (and can I just say that those little spacer dudes are perhaps the greatest invention of all time).