Boo

Boo is an object oriented, statically typed programming language that seeks to make use of the Common Language Infrastructure's (CLI) support for UniCode, internationalization and web applications, while using a Python-inspired syntax[1] and a special focus on language and compiler extensibility. http://en.wikipedia.org/wiki/Boo_(programming_language)

http://boo.codehaus.org/

http://boo.codehaus.org/Gotchas+for+Python+Users