I have been engineering software (and even a little hardware) for many years, some of my languages and skills include in the mean time, some misc test apps to keep you amused (all my examples and commercial work are hand crafted ~ no external modules / frameworks like jquery were used)..

HTML5 Pool Concept / test application (more info after the table! look down!)

Key features.

Pool not your thing? maybe a little donkeykong (click here)?

Something more technical? pps.(wait till you get a look at the commercial work I have done)