^ The camera? This is already my second copy and back focus is evident with alot of D7000s.. Slight AF tuning to compensate does not necessarily mean issues with body. Its just the way the D7000 behaves with different lenses as apposed to other Nikon DSLRs. If you need more like 20-+ adjustments then you have a problem and should probably exchange or service.
DDR, try this test
Nikon D70 Focus Chart you may have abit of back focus too