Check the emulators in the homebrew section. WiiMC is nice as well. I also like wiixplorer.
If you have a compatible harddisk, you can backup your games and place them on it.
With an usb loader, you can play them from there. No need for disk swapping anymore.

 

Well, it might help to say everything that you already have and are aware of so people don't just keep saying things that you already have.

Checkout wiibrew.org

 

Besides homebrew????

Well, you can purchase games from the store. You can surf the web with the internet channel. You can create "Mii's". You can purchase and download games from the shop channel. You can check out the weather and the news. Buy a balance board or other accessories.

Take a look at your local walmart.

 

i dont think your getting it m8
homebrew covers everything ie media players, emulators, homemade games, ported games and apps

beside homebrew theres the official games and addons thats on the market that you would need to buy from a shop

 

If you have USB loaders try "Game shortcut creator" and make channels for your favorites games. It's the fastest way to fill your empty channels
You might also install Sneek/Uneek channels check this out:
http://gbatemp.net/topic/321905-custom-channels-ad-tips-for-neek2o-users/page__view__findpost__p__4123290

Have Fun