What I've always found interesting was how much the date could change. For the most part, Easter is the first Sunday after the first full moon after the vernal equinox...another fine example of a Christianized pagan holiday (like why Christmas is 12-25)

It's still a pretty fun holiday though. A fun Mexican tradition we like involves smashing eggshells full of confetti on eachother's heads! Hopefully it won't rain tommorrow!