I remember when you used to be able to shake a can of coke up and then pop the ringpull slightly you'd get a jet of coke that went like 20-30 feet! of course those were the completely removable tabs, i remember when these changed, i was so GLAD! i'd once gashed my finger open pulling those tabs off.
upside, easier to open can, downside, no more ringpull frizbee's.
i remember marathon changing to snickers.
i remember 5 and a quarter inch floppies being the new thing, then 3.5inch floppies being even better! hell i remember when they went double density and ramped the memory from 77k to 1.4mb!