First, we've got Conker's Bad Fur Day for N64. It's a Mature rated game featuring a foul-mouthed, greedy, beer-drinking, poo-battling squirrel. The game is packed with hilarious adventures, trips through movie parodies, unique jokes and fun gameplay. It's a must-play, must-own title for any N64 fan.
Then, we've got Legend of Zelda Twilight Princess for Gamecube. A rare game for the Gamecube since it was one of the last games released for the Gamecube. It was simultaneously released on the Wii, so most people bought the Wii version, making this one rare.
Fun tip: if you compare the Wii and Gamecube versions, they are mirror images of each other. On the Wii, Link is right-handed, on the Gamecube, he's a lefty. :D