I've been to town on Easter Saturday and around 11am, ceramic pots, and we're not talking just little ones on the windowsill, but also huge, massive pots are dropped from the top balconies of the buildings. It is quite a sight and if you're in Corfu for Easter you must go and see it. The crowd is held back at a fairly safe distance but it is quite chaotic. When i went, this all happened just near the Liston area, although small pots are thrown all over Corfu. Traditionally, the Greeks also shout something at this time, can't remember what exactly or what it symbolises, I'm sure others on the site will know.
What i do know though is that Health and Safety in UK would never allow it!!!