Learn A New Language

coffii writes "I have just spent the last two days learning perl thanks to devshed. They have a set of eight well-written tutorials here and an introduction to OOP in perl. Why not learn a new language today, its a bit more productive than trying to get fp on ./ ;). I think I'll be going back for a dose of python next week." Even if you're not planning to specialize, this series look like a good way to at least get an overview of a few different languages. Can anyone recommend other interesting online tutorials, especially ones for unusual languages that might never find shelf space at the local MegaBooks?