I will consider anything legendary if you slap Britney on it! =D
Other than that I'd say the following:
Mega Man X
Goldeneye
Half-Life
Final Fantasy VII
Metal Gear Solid
Super Mario Bros.
Tomb Raider
Doom
Civilization 2
Broken Sword
I could go on here. There are too many to count them all.
Official member of VGC's Nintendo family, approved by the one and only RolStoppable. I feel honored.