Thanks RobWright, you saved me the trouble of starting a new "Recommended Gamecube Games" thread
This is what I was thinking for the Wii: Wii Sports Pack, Wii Play, Super Mario Galaxy, Mario Kart, Mario Party 8, Metroid 3, Super Smash Bros Brawl, Zelda Twilight Princess, Guitar Hero, Mercury Meltdown Revolution, Paper Mario, Dance Dance Revolution?? (for the girl), No More Heroes, Resident Evil 4 Wii Edition, Okami
And for the Gamecube: Beyond Good & Evil, Zelda Wind Walker, Zelda Four Swords, James Bond: Everything or Nothing, The Incredible Hulk: Ultimate Destruction, Super Mario Sunshine, SSX 3, Viewtiful Joe, Metroid Prime 1 & 2, Super Paper Mario, Pikmin, Smash Bros. Melee, Eternal Darkness, Cellda
How do these sound? I'll have to add Star Wars Rogue Squadron II and Killer7 to the list. XIII was one of my favourite games of all time, so I guess I need to try Killer7. Oh, and when it concerns Resident Evil 4, I've played the PS2 and PC versions at length so that might be enough, though I've heard the Wii version is the definitive one. Sounds like it's worth a spin.