Wanna get up-to-the-minute conversion rates for trading your dollars for rupees? What about your pesos for shekels? There's a site that'll do that for you:
The Universal Currency Converter
This can be handy when you're shopping online, particularly if you're taking advantage of the internet's incredible diversity by perusing a site in a different country and you need to know if you're getting a good deal on the site's merchandise.
I like to look at obscure internet storefronts from all over the world. It's how I've ended up with Afghani woollen mittens and a Mexican nativity set. I love decorating with international items, particularly odd ones that can provoke conversation.