Haskell is an attempt by some folks within the functional language community to create a modern, strongly and statically typed, lazy evaluated functional language that can serve as a lingua franca of the functional community, and a platform for further research. Haskell, like Python, uses indentation to show block structure and lexical scope, and has an exceptionally clean syntax (like Python 
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Pythoneers who are interested in the programming techniques embodied by things like lambda, map, filter, and list comprehensions and would like to explore their full power might want to check out Haskell.
More information at: http://haskell.org/