Both of these were made for the website greyscalegorilla.

Reverse
2011

Here's what the website had to say about it:

"A previous winner of the Five Second Project, Ross Phillips is no slouch when it comes to fun, simple, and well crafted animations.

This entry from Ross was practically a shoe in to win with it’s iconic imagery, globally relatable theme and a brilliant unexpected finish.

All of life (awkward teenage years included) crammed into five seconds of keyframed goodness. Bravo!"

Balloons
2010

Recently screened at Pictoplasma 2011.