I work across the street from one. All of the engineers here are chomping at the bit to flock over at quittin' time. I snuck over and didn't find anything on sale yet.
They knew their store was closing. You could tell as people were rude, removed from their work and generally uncaring... sadly a little more upbeat than normal. At this store, its hard to find a salesman anywhere in the store most times. I usually just walk up to the counter, ask for a manager and tell them what I want. Sometimes they'll send me to the area and continually page someone, sometimes I'll get lucky and find someone before they ccan hide. Hell, one time a manager met me at the door and asked what I needed. He knew who I was (as he was usually the one I'd get stuck with) and thought he'd save us both some time and just wait for me. Neither of us were ever rude to each other or would complain, this was one off the few genuine acts of customer service I witnessed there.
Despite this, I've always like Circuit more than Best Buy... smaller stores, better stuff (though not as wide of selection) and usually better prices.
