Behind on language skills? Have a language you've always wanted to study but never gotten around to? Need that kick in the arse to get started?
Here's one.
linguathon For the month of July, you (yes, you!) choose a language or languages and study it each day for a month. You can be a complete newbie to the language or nearly fluent, and you can study however you want. Keep progress logs and let the community know how you're doing.
I'm doing French and Latin. (Yes, I'm afraid Spanish will be dead for awhile.) How about you?