Nintendo has a list of all virtual games released,release date, genre , and the wii points required to download the game! LINK: scroll down to see the list!! http://www.nintendo.com/wii/virtualconsole/games
Wikipedia has one as well, and it also has a list in the same page for upcoming games that have been announced or ESRB rated. http://en.wikipedia.org/wiki/List_of_Virtual_Console_games_(North_America)