I was doing some research on Pilobolus a little while ago, but forgot to post this back then. So in case anyone doesn't remember, Pilobolus is the fungi we discussed that uses a build up of pressure to launch its sporangium through the air in order continue its life cycle. I found this video (The Fastest Living Thing on the Planet!) which claims that Pilobolus sporangium dispersal is the fastest acceleration of any living organism. I was extremely impressed until I noticed a couple errors the narrator of the video made which made him lose some credibility. So I did some more research and found this article on Wired which goes deeper into the physics of the claim. Wiredhttp://www.wired.com/wiredscience/2011/08/acceleration-of-a-fungus-spore/. It seems that saying Pilobolus is the fastest thing in the world is definitely an incorrect statement, but it may take the prize for being the fastest accelerator...that we know of.
And for fun, here's a couple other cool Pilobolus videos: