Comprehensive Arduino-Compatible Hardware List?

I can't find a complete list anywhere, so here's my stab at it, starting with the list at arduino.cc, Make's 2008 Arduino Gift Guide, Freeduino, Adafruit, Sparkfun, Seeed Studio, RepRap, Wulfden, [more]. Not sure about the Orangutan and mpguino since not all pins are exposed, and unsure of Teensy boards since they need custom Arduino IDEs.

Update (June 16): I revised the spreadsheet and messed around with font and cell sizes to make it more easily viewed in-line here, plus it should update automatically as I add or edit boards. Happy hacking!

Update... ALL THE TIME!: This is constantly being updated as new Arduino-compatible boards are announced!

Click here for the spreadsheet on its own in Google Docs.