I highly recommend a good bit set with a flexible driver and a magnetic bit extention to go with it. That one tool is so versatile, I use it more than any other.
Here's one from Sears for $10. Hard to beat that package. It's not Craftsman, so no lifetime warranty.
Sears item# 00930544000
My set came with a driver more like this one, though: (item 00930561000)
For interior screws and such, a tight angle bit ratchet like this one makes that kit even more useful (item 00941716000)
-Daver