Don't forget all the Apple stores. They are still opening more and more these days. They opened one recently in Burlington, Ontario which is around 30 minutes from where I live. You should see how many people they have working on the same shift, there must had been at least 15, maybe 20 of them for a store of that size. These stores are always packed every time I go by one.
There's a large number of sales positions at stores like Best Buy, Future Shop, etc. Stores like Best Buy do not hire people to sell Apple products. Apple hires sales representatives to work at big box stores. The employees are often well-paid through commissions if they are good at selling their products. They get free airfares to conferences anywhere in North America. They get free accommodations too as well.
The last time I checked, they have nearly 50,000 employees and growing.