I'm a big fan of the card game Killer Bunnies and the Quest for the Magic Carrot. I've been involved with a couple of different things centering on Killer Bunnies, which are linked from here.
My fiend Jason Breti and I have collectively put together some reference sheets in PDF format for Killer Bunnies. They are designed to be folded up to the size of a Killer Bunnies card, making them more portable than the rules or Bunny Bits included in the boxes. They are available in two formats:
These are posted with the permission of Bunnies Creator Jeffrey Neil Bellinger.
I've been toying around with a couple of different alternate rulesets for Killer Bunnies. Both of these are still very much works in progress.