Currently I work at best buy in kansas city, and let me tell you most of what has been said here is true. I work for the geek squad part of BB.
There are 2 kinds of people that are hired at best buy.
Managers and Sales people. They do not hire on knowledge, they hire on your appearance, attitude and what you like (area you like/want to work in).
The problems that come up from Best Buy are because of one thing. Everyone there is meant to be a sales person *unless your a manager, still a sales person though*. Back in my department (geek squad) there are, about... 14 employees. There are about 3 moderately intelligent people when it comes to computers (1 being myself), and 2 highly intelligent people when it comes to them. The manager, being one of the 2, does not do the hiring of this department, guess who does? The Sales manager, GO FIGURE! Everyone else is either stupid, a good salesman, or goes to college(and does not know jack* *which apparently automatically makes you a genius? According to the sales manager anyway*
So the same problem happens in every department *except appliances, you would only REALLY want to work in there if you knew something about it, atleast all the people that work in it here do anyway*
The only good thing that comes of the sales reps not being on commision is that it means the ones with knowledge *there are SOME in sales* are gonna sell you crap you don't need, because greed can't get to them.
However commision or not the idiots sell just as much because they don't know any better.