Here are a couple very random videos and sites about different things related to Polka Dots.
A Brief Hiistory of Polka Dots – an interesting read about the history of Polka Dots.
http://en.wikipedia.org/wiki/Pointillism – all about art (made by painting dots)
– Polka Dot Door from 1980-1990s
Polka Dot Cake – cute cake