Walkability in House Shopping

Zillow has added WalkScore for homes for sale. If you click on "details" and scroll down to the bottom, they give a WalkScore (walkability) for that home. My house has a WalkScore of 51. I consider my house to be more walking friendly than that, but I don't venture to the movies often (which are far away), so it's somewhat subjective. Some interesting houses that were rated by Zillow just for fun:

• White House = 97 ("Walker's Paradise")

• Brady Bunch house = 83 ("Very Walkable")
• Godfather house = 54 ("Somewhat Walkable")
• Elvis' first home = 40 ("Car-dependent")
• Playboy Mansion = 29 ("Car-dependent")

Walkscore can be accessed directly here: http://www.walkscore.com/