any port of any old games , you found to be better or more advanced than the original , or ports you would just spit on or defacate on.

good : zelda gc bonus disc(awesome crisp new resolution)
FF dawn of souls (not a huge hit on my list but a awesome boost on playabailty on my list)
re 2 and 3 gc (looks damn fine on the hd tv)
doom gba (great even without the last 2 bosses i couldnt complain)

bad: zelda 4 swords: damn link yells on zelda 3