Today's XKCD: http://xkcd.com/1430/
As to a more direct origami connection, I think Jeremy Shafer has a model of scissors, and I feel that I've run across a few other scissors but I can't recall now... And then there are knives, etc... I'm not sure if I have seen an origami model from kami that can actually nicely/cleanly cut kami... Hmm... -=D'gou
