This may sound like complete nonsense but porting older PC games to work on Nintendo's last gen hardware would be a fun project. Even though this would be complete homebrew porting of retail and creations of homebrewers/ small time developers it would be interesting to see what people could get the wii to run. I was thinking about this because I was playing Grand Theft Auto III the other day on my PS2 and I was getting mad because my PS2 would stop spinning or reading the disc and it would tell me to close the disc cover. I later played Monster Hunter 3 on my Wii and thought, since the Wii out performs the PS2 in terms of graphics, AI and the such, I looked at my pro-controller and compared it to the PS2's. Since a PC takes in digital input from a keyboard and GTA3 is on PC and since the PC version runs above PS2's capabilities and below the Wii's I made that connection. I would like to see a port of GTA3 on the Wii because it is playable on smartphones.

Um... yes. This is a thing that people have been doing since 2007.

You won't see a port of GTA3 specifically, mainly because whoever does that is going to face some corporate lawyers for copyright infringement.

But lots of open source games have been ported over to Wii. Other games were original for the platform. One such list of games is here. WiiBrew has a collection of several hundred programs. They are the biggest, but not the only, collection of Wii homebrew.