Originally Posted by jezterr

1 = bad
2 = okay
3 = nice for that suspended look.
4 = nice for that misty water look.

try even faster or slower shutter speeds to exaggerate the looks. that's also another benefit of a polarizer, as it gives you ~2 stops down, allowing for longer shutter speeds. another method is using an nd filter, which essentially does the same thing, but they have different options for how many stops you want.