I have worked at Circuit City, Office Max, both in the computer areas, or generally the guy they send customers to when no one else knows the answer.
I absolutely hated working by sales in the computer dept at Circuit city, I eventually switched to a regular pay without sales, but still worked in the computer section. I was the guy who would tell you what to buy and where online to buy it cheaper and better, people loved me, the stores had no idea. I simply wanted the shopper to know what their choices were.
I am now almost done with my electrical and computer engineering degree. Those two jobs in no way helped me. I learned far more working construction and talking with homeowners. The only thing I liked was the discounts you can get such as on car stereos, etc.