There's also Stephen Hicks' winning 2008 ICFP programming contest entry, where he writes "a controller for a Mars rover" in TeX.

http://sdh33b.blogspot.dk/2008/07/icfp-contest-2008.html

Rapid Prototyping in TeX: https://wiki.haskell.org/wikiupload/8/85/TMR-Issue13.pdf