Just for kicks, I put my Game Boy Player disc into my GameCube and had my GameCube monitor hooked up into it. Booted the GameCubeBoy up without a cart in it, but with a GBA/GCN Cable going to my Wii - in the Fourth Player Port.
Next, I booted up my Wii. In both the Wii and the GameCube, each First Player Port contained a wicked cool Hori Digital Controller (a.k.a. Game Boy Player Controller). Since my wife was watching some show about Giant Squid (?), I had to run my Wii through my PS1 monitor. And into my Wii went Pac Man Vs.!
And I played a game of Pac Man Vs. all by myself (since my wife was really into the Giant Squid show), on two little screens.
It's almost like I have my second Game Cube I've always wanted. When I finally manage to get around to finishing TP, I'll have to play through Wind Waker again on Wii, using the GCN/GBP/Monitor combo as my Tingle Tuner.