Can't remember the last time I got so little info from a Sheldon Brown link. Oh well, even Elvis sang a clinker or two......

My ideal: heavy-duty U-lock through the back wheel, and around the seat tube (FS bikes can have the rear triangle disassembled), and a heavy-duty chain/lock through the mainframe and front wheel, and around the anchor point. Pitlock-style skewer replacements, too.

At present, I have a monster Masterlock U-lock, and an Oxford chain/padlock; I would add, as an alternative for one or the other, a thick RV/trailer cable lock with the integrated lock mechanism. All 3 can be had for under $100. Yes, cables can be cut with bolt cutters, some easier than others; but who would go to the trouble of cutting a cable before noticing the 2nd lock that they're not equipped for? (Just the LAME amateur bike thief.)