Old news:

Code
• compile-sbcl.sh | sbcl.sh - 2008.07.16 - Bash scripts for lisp code compilation and invocation using Steel Bank Common Lisp. They ignore init files for extra quickness.
• fohill - 2008.10.16 - A simple keylogger for linux. It uses /dev/input/event0 for the keyboard. The logger itself is in C while the client/server communication scripts are in Python.
• lineal - sig - 2008.10.08 - Linear algebra calculator web or shell interface. More info on common-lisp.net.
• heap.lisp - 2008.07.19 - Tree based heap.
• tails-do.lisp | test-tails-do.lisp - 2008.07.19 - Efficient list accumulation using do* loop syntax and some test cases showing its abilities.
• inputs.lisp - 2008.07.15 - Useful input functions.
• ttables.lisp - 2008.07.12 - Formal logic using truth tables. Examples at bottom of file.
• integral-approx.lisp - 2008.07.12 - Compare numerical methods for approximating integrals. Full of examples.
• beepboard.cc (lin) | beepboard.cpp (win) executable.exe - 2008.10.22 - Play the system beep on a computer keyboard in linux or windows respectively. Dependencies listed in opening comments.

Math (pdf format)
• Attributes of polynomial expansion (combinatorics)
• More combinatorics (Catalan Numbers) dealing with the BF programming language. (lisp solution)
  Note: I didn't know about Catalan Numbers at the time of writing so they are never mentioned. Derivation ensues.
RC Files
• .vimrc
• .vim directory
• .xmodmap (Programmer's Dvorak with some tweaks)