Universal Turing .... spreadsheet?
I still don't think spreadsheets should count as Turing complete since they require the user to intervene to execute the machine if the tape isn't long enough or there aren't enough iterations represented. But I still think this is pretty funny.
By the way, Google Spreadsheets is so much better than Editgrid. Aside from macro support (which obviously isn't forthcoming) and a few other minor features, Google's effort is just about as close as you can get to a usable Web 2.0 AJAX (*violent dry-heave*) spreadsheet.
P.S. if you're reading this in Livejournal you'll have to go to my blog to view it since LJ doesn't like iframes. Just click the link at the begining of this entry.