Since 2004 I've taught myself, and others, in just about every discipline the Source engine offers.
Mod: Jailbreak Source
I wanted to create a fast-paced map that emulated the flow of UT2004's Jailbreak mod. The result was a very small map with a circular flow and "open jails" with no ceilings. The mechanic of falling into and shooting out from jails was a huge success.