I think SOTC, Okami and Katamari Damarcy are must haves on the PS2
Although the latter two are nowhere in the same realm as SOTC but are still amazing games nonetheless.
And Monster Hunter, because it was briliant swinging a giant warhammer into a dragon's face.
(
Jeru War and Piss,
Fri 14 Mar 2008, 15:39,
archived)