Code:

`(1+9^(-4^(6*7)))^(3^(2^85)) = e (almost)`

What is notable about this formula is that it uses all the digits, 1-9 exactly once. It does not produce e exactly, but it comes so phenomenally close to e that it almost seems more incredible than if it actually equalled e. However, if one analyzes the formula in just the right way, one can see how it is not surprising at all.

I cannot take credit for this one. I got it from Dr. James Grime.