At $600 you are at the very bottom entry point for DSLRs. Tell us what Best Buy has at the price and we can respond.
Not a whole lot of selection at the price, but I would guess maybe the Nikon D40, Nikon D60 (they may have that on sale since it is being discontinued), one of the Olympus models, and then maybe one of Sony's beginner cameras. But again, I don't know what Best Buy is currently carrying.
A refurbished camera would keep you in that price range, but I don't know if Best Buy sells refurbished "new" cameras.
So I want to jump head first into photography and I don't want to have to go through all the trouble of film, so I'm looking to get a good Digital SLR camera. I'm looking to spend around $600 and I want to put it on my Best Buy card so I need a camera that they would carry. Can someone suggest to me what would be best around this price?