wii points can only be used to buy ANY game from Shop channel on the wii console using wifi. that includes the virtual console as well as the wiiware mentioned. http://en.wikipedia.org/wiki/List_of_Virtual_Console_games_(North_America) I'm not sure how old this list is, but it gives you an idea how extensive it is & it grows weekly. many game sites review both the wiiware & vc titles & youtube often has game reviews & gameplay. for storing all those wiiware/vc games, nintendo did an update so you can load your games off your SD card. (no, you can't just bring your SD card & pop it in your friend's wii, they are coded to your wii only)
as J. Toole said, if it's sold in stores in disc version, that has nothing to do with wii points.