Of course, the main advantage of the GameCube is that it's the home field of one of the world's premier game designers--Nintendo. While powerhouses, such as Electronic Arts and Sega, make games for all systems (including this one) you can only play Nintendo games on a Nintendo system. Here's a brief roll-call of characters and series you won't find on the other consoles: Mario, Legend of Zelda, Metroid, Kirby and, of course, Pokémon.
In short, the GameCube isn't an all-in-one entertainment system and neither is it (quite) the most powerful of the modern video-game consoles. But for video-game enthusiasts who appreciate the superlative gameplay of Nintendo titles, its value cannot be beaten.
This bundle includes a copy of Mario Kart: Double Dash!, plus a bonus disc containing GameCube versions of four classic Zelda games--The Legend of Zelda (NES), The Adventure of Link (NES), The Legend of Zelda: Ocarina of Time (N64), The Legend of Zelda: Majoras Mask (N64)--and a one-level demo version of The Legend of Zelda: The Wind Waker (GameCube).