"FIZZ BANG BUZZ!" 3,7,11 efficiency
Indeed, addition is faster than modulo.  This implementation runs about 33% faster than the original when counting up to 100.  However, I expect that it wouldn't scale as well to larger limits due to its O(n) memory usage.

def fizz_bang(limit=100):
    limit += 1
    strings = [''] * limit

    fbb = ((3, 'Fizz'), (7, 'Bang'), (11, 'Buzz'))
    for stride, noise in fbb:
        for n in range(0, limit, stride):
            strings[n] += noise
    for n in range(1, limit):
        print strings[n] or n


Also, according to PEP 8 conventions, FizzBang should be named fizz_bang instead.