http://docs.python.org/dev/3.0/library/multiprocessing.html

"map(func, iterable[, chunksize])
A parallel equivalent of the map() builtin function. It blocks till the 
result is ready."

Not really, __builtins__.map returns a mapping object,
Pool().map returns...a list?

>>> print(multiprocessing.Pool().map.__doc__)  # rather lame doc string!

        Equivalent of `map()` builtin