I have particularly strong experience in Lua and UnityScript(basically JS with Unity libs, in pragma strict), along with limited but still clear understanding of Processing, Python, C#, x86 assembly and C.
One thing I am really proud of in Lua is having created magnetic gravity code for an F-Zero like vehicle, using custom libraries for rotation interpolation(quaternions are the devil m8) and ray-based physics, which I've subsequently managed to port to UnityScript.