Re the "We Suck" hack: You missed the intermediate step between Caltech's placard hack and Yale's. At the 1982 Harvard-Yale game, a group of MITers disguised as Harvard students passed out placards to the Harvard sections telling them it'd spell "Beat Yale" when they actually spelled "MIT". We didn't get as much notice as we might have due to two factors; 1) that was also the year the DKEs did the infamous "weather balloon with MIT written all over it inflating from a device buried under the field during the second quarter" hack which got the majority of coverage and 2) our rewiring of the sound system for a full halftime show failed (oddly enough, we later learned several other groups also tried to rewire it, and likely the various rewirings managed to cancel each other out). Still the Harvard folk spontaneously held up the placards whenever Harvard scored..and they scored a lot that game.

After I heard about the "We Suck", I emailed the organizers and asked if they'd heard about our 1982 version. Got a back a reply that they had, and that it'd been a good thing that they had. Because of that knowledge, they went to extra effort to counterfeit Harvard ids to show dubious alumni, a fair number of whom were still paranoid about people claiming to be Harvard students handing them placards 20+ years later due to our hack.