Have a basic interview with one person. There is then an interview where you are with a group of other candidates and you due a weird thing where you talk to current employees about products.
I applied online. The process took 1 week. I interviewed at Best Buy (Washington, DC) in Sept 2010
Interview
I was interviewed twice before I finally got the job. The hiring manager interviewed me with a series of basic interview questions. My second interview was with the store manager where he basically just discussed the ins and outs of best buy, salaries, etc. Once you have the second interview you have the job. Just ask questions, show interest and SMILE.