I worked at Best Buy for a number of years, and am also a stockholder. Although I don't keep as close an eye on it as I should, I'll tell you that I think Best Buy is headed for trouble.
Best Buy does one thing, and they don't do it all that well. They have most anything electronic that someone would want to buy, but giants like Wal-Mart and internet companies like Amazon and Tiger Direct can compete with no problem. Also, electronics giants like Fry's have a better selection and better prices, and carry more and more specialized merchandise.
All that aside, though, I think Best Buy's biggest problem is their atrocious would-you-like-fries-with-that salesmanship. Unless you're buying a CD (and sometimes not even then), you can't get in and out without some blue shirt asking you if you want a "performance service plan" (not an extended warranty!), half a dozen printer cartridges, a new UPS system, a free month of dial-up internet, two free months of magazine subscriptions, a free trial of Rhapsody, and a credit application for a Best Buy card. All of those are real things, and I was forced to offer ALL of them to each and every customer I had in the computer department. There are more, too.
I get that Best Buy wants to get every dollar they can out of you. I just think that that's better done through competitive pricing and good product selection, not through the real-life version of pop-up advertisements. That's annoying, as is the "CARE plus" sales method they make their workers employ, which involves asking you your name, asking leading questions such as "what will you be doing with your digital camera? (duh!)" and then trying to leverage that conversation against you to get you to buy more stuff.
I'll tell you how my success with that gem of a strategy went. Occasionally, a customer would listen politely and pick up a few of the suggested add-ons. More often, though, the customer had enough after the second add-on pitch, and stopped listening entirely. More often than not, a customer buying a computer/printer combo will leave the store without so much as a printer cable or paper to print on because they didn't want to hear me or one of my coworkers try to squeeze more money out of them.
Mix into that formula the fact that managers come around with a clipboard every half hour to browbeat you about not meeting your add-on sales goals, BUT you don't earn any commission for selling them. It's unrewarding and demoralizing--the customers hate you, and so do the managers. Even as a stockholder, I can't stand to shop there anymore because of the barrage of BS I have to endure to get my product out the door.
Now that I've finished my rant, here's your answer: Don't buy. Best Buy will most likely rebound somewhat, but they can't transform the business into a competitive, working model in time to save themselves. It'll take a complete overhaul, and they still couldn't compete with Amazon or Fry's. Don't climb aboard a sinking ship, no matter how small the leak.