Link to CNN.com video.
"I ran around the store to make sure there was nobody in there."
No! That's not what you do! You greet the bear with, "Hello, welcome to Circuit City." Then you show him where the grills are. Or, computers, in your case. Or circuits. Or whatever.
"My first thing was just 'Freak out.'"
Man, is this the very first bear you've ever sold a piece of electronics to? Sheesh! Everyone knows you remain calm, give him a shopping cart, and attempt to up-sell him on some name-brand merchandise using a lot of stupid bear-related puns.
Then you can freak out. Freak out because you've just dreamed up a totally radical concept for a commercial!!