I chose F-zero Xpansion kit (that is if you're a F-zero X fan in the first place) Sim City 64 is a competent game and pretty fun to mess around with but there is a slight language barrier. I don't know how to read Japanese for one. As for Doshin the Giant, the first game is certainly better than the second one. It's kind of like Black and White but in a more light-hearted, hero-centric fashion. It was also released on the GameCube in PAL and NTSC-J regions.
Am I the only one who thinks this thread is as pointless as pointless can be? Next to no-one owns the hardware nor are they likely too so as a matter of curiosity why have you started this thread? What insight do you need on 4 art packages, an impenetrable (to non Japanese speakers) simulation, 2 hit and miss God games which again require more than a passing knowledge of Japanese, a golf game and an expansion disc for an average at best racing game? This'll be good...
Yeah, this is a pointless thread really. Only three of the above are actually games while the others are "entertainment" and add-ons.