I use my Wii exclusively for Virtual Console. The classic controllers are actually quite nice, the d-pad is fairly large which helps.
At first I thought it was kind of expensive for what is essentially an emulator, but that notion left me fairly quickly. There are no issues that emulation often has, such as screen tearing, sound glitches, random lag, etc. The image is rock solid. It is also the only way to play certain old games with a component cable, they look great. I'm about to buy the Mad Catz Tatsunoko VS Capcom arcade stick which apparently has really nice feeling parts despite not being Sanwa or Seimitsu, and is also very easy to mod.
Right now I'm play Lords of Thunder and Ogre Battle 64. What else have you been playing?