I have Zelda Four Swords on the GC. I originally played it as the multiplayer for the GBA game Link to the Past, and with 4 of us playing it was the most fun I had ever had with a game (I was a kid then, played in our luch break. Yeah I was cool XD).
I then got it on GC with the GBA to GC cable, but only played it 2 player with my brother, who wasnt very good, so it didnt get played too much. I would have loved to have played it properly with 4 ppl, im sure it would have been great. The additional GBA screen for personalised text screens, or for when you fall down holes, was a really great feature which I enjoyed a lot.