What's with you two? =P
There are two Best Buy's in Queens and one in Staten Island. For the two in Queens just get on the G, R, or V trains and get off at either Northen Blvd or Grand Ave.
For the one in Staten Island its right next to the SI Mall
As for Office Max, there's one in Atlantic Center in Brooklyn (Pacific St / Atlantic Ave), one in Staten Island, and one right near the Best Buy at the Northen Blvd stop.
Yea yea i know, its in Queens, but no pain no gain.