This is something I'm animating for a Animation Test Real for my portfolio! Soon there will be a guy running and Aliens and prolly other crazy stuff! Hope you enjoy the test at least!
I know that this is just meant as a test, but I find it oddly mesmerizing all the same. Having it loop after reaching the end is rather jarring on the eyes though. If you could tack on the animation in reverse before looping it so there isn't any sudden jarring, that would be fantastic.
I did something like this in the final animation. I just eased it in to 2 seconds before it stops, then eased it out to it's resting place. Made it a lot more smooth when it stops, and a fade out for when it restarts. Once I get photoshop and flash and all that I'll update it!
I like how you portrayed depth
it's time you create an animated story of a little longer than you have talent