Hi fellow AVR freaks, figured I'd cross post my new hack from my blog. Maybe someone will find it useful. Basically I needed a really simple IR decoder that used only pin change interrupts, and worked on the ATtiny85. None of the libraries I could find did this. Read more here:
http://giferrari.net/blog/?p=173
Note that this will work just fine for a normal Arduino - just attach the pin change interrupt with PinChangeInt instead of directly manipulating the registers as I do in setup().
Enjoy.