Obviously I'm not a huge miner or anything, nor a gamer or super techy person, but since I need a new computer, I thought I might as well give it a shot as long as I don't have to install anything other than mining software.
tl;dr - what's a decent computer that's ready to mine that's for sale at my local Best Buy or somewhere?
If you are serious about getting into mining, I would highly suggest building your own system instead of buying some off the shelf system from a big box store.
Building a system isn't that hard, and allows you to upgrade it as you need. Most off the shelf systems are not very upgradeable, if at all. There are several people here that could put together a parts list for a great system for everyday use while being able to mine also. What price range are you looking to spend?