Big, bold numbers: this might be the best-looking watch face on the Pebble. The numbers slide into place when the time changes. Plus, date and day are tucked away on the bottom. This is the best use of Pebble display real estate on a watch face I've seen. (All Pebble apps were downloaded via Pebble's watch face directory and mypebblefaces.com.)
It might take a few moments to figure out how to read the time, but hour and minutes clearly show up in four large numbers. Again, the lines slide and animate every minute.
Someone actually made a Tetris clone for the Pebble, and it works pretty well. The right-side buttons move the blocks left and right, while the middle button rotates. A little hard to control on your wrist, but it's free and it reminds me of Nintendo's Game & Watch.
Another minimalist watch face with elegant design, Polar shows simple digital time in the middle, and concentric rings mark off hour, minute, and seconds.
Utterly ridiculous: a Back to the Future-inspired readout just shows the minute before, the current minute, and the next minute. Good for those who want to feel a little fuzzy about the actual time.