Here's an interesting game for your Windows Phone; Seeds on the Wind. We often describe apps as "interesting" but this game is. The object of the game is to navigate a dandelion seed across an obstacle course of sorts to find fertile soil.
You control/direct your seed by wind. No, you don't blow on your phone. You tap and hold the screen to create gusts of wind. Depending on where you create the gust, the seed drifts accordingly. Wind gusts aren't infinite though. There is a wind meter in the upper right corner of the screen that will eventually deplete. The meter will replenish once you lift your hold on the screen.
If your seed hits the ground or obstacles (Bar-b-que grills, clothes lines, trees, sand boxes, etc.) the game ends. Your score is based on how long it takes to land on fertile ground (open field, flower pot, etc.). Seeds on the Wind is a multi-level game with easy and hard difficulties. It is a challenging game and once you get the hang of controlling the wind, the game grows on you. The only nit that jumps out after playing the game for a few days is that at times, the seed can be a little difficult to pick up on. Otherwise, Seeds is a nice, interesting game.
Seeds on the Wind is a free, ad supported game that you can find here (opens Zune) at the Marketplace.