For those needing a good, simple sharpening that's easy to use and won't break the bank I recommend the Edgemaker Pro system. It works on most knives and will get an edge that will shave. It's not ideal for repairs (won't do much for broken tips or bad chips) but it's fine for general sharpening.

The Spyderco Tri-Angle Sharpmaker is also pretty good, again not for damaged blades but fine for sharpening.