Scala / Lift

Drupal and various Drupal web sites

Server Sky – satellite orbit visualization (SaVi, geomview)

Computer Vision – let me find out what tools he's using

PHP profiling

Linux / KVM / Xen / OpenVZ (I'm actually getting this all set up on my machine at home, but won't be able to bring it to the lounge. :))

Web Server Shootout: Linux, web servers, profiling tools

Android development tools

Titanium

Windmill

Webkit

R, GGobi, CouchDB, some Javascript IDE and maybe Mondrian for the Bayesian classifier and clustering

Hadoop

memcached

jRuby

Python

Django

Rails

MySQL

PostgreSQL

Parrot

ARM cross-development tool chain

Clojure

SWIG

OCaml

Docbook / LaTeX / LyX / TeXmacs

Papier-mâché for making the twin albino goats!