The Japan-exclusive Navi Trackers (Tetra's Tracker) that was included inside the menu of Four Swords Adventures on Gamecube.
A 1-4 player multiplayer hunting contest that had a hostess (Tetra being the default hostess) giving you the rules, cheering you on and doing in-between-minutes announcements and lottery stuff, and every single dialog was voiced, it's a fun game to have in your Gamecube collection, if you play alone, you compete against Tingle to reach for numbered signs before him, while also collecting the items and rupees on the current map.
I think this video shows the game functionality the best.
[youtube]http://www.youtube.com/watch?v=qjcJNDuuKHs[/youtube]
Other videos only show either sides of the screens, so to record/stream both screens, you need two capture devices, while playing with the Gamecube's Game Boy Player. An experiment I'd like to do later on.