We can simplify each term separately:
$(-2)^3 = -2 \cdot -2 \cdot -2 = -8$
$(-2)^2 = -2 \cdot -2 = 4$
$(-2)^1 = -2$
$2^1 = 2$
$2^2 = 2 \cdot 2 = 4$
$2^3 = 2 \cdot 2 \cdot 2 = 8$

Now we can add up all the terms:
$(-2)^3 + (-2)^2 + (-2)^1 + 2^1 + 2^2 + 2^3 = -8 + 4 + (-2) + 2 + 4 + 8 = \boxed{8}$
The answer is: 8
Below is a math problem. Provide a detailed, step-by-step solution.

### Problem:
What is the value of $(-2)^3 + (-2)^2 + (-2)^1 + 2^1 + 2^2 + 2^3$?

### Answer:
