MUST PLAYS: Kirby's Adventure, Kirby Superstar, Kirby Adventure Wii
SECONDARY INTERESTS: Amazing Mirror, Kirby 64, Kirby's Dream Land
KIND OF OKAY: The rest of the dreamland series, Squeak Squad
SPINOFFS WORTH PLAYING: NEARLY ALL OF THEM!
And if you can't find any of those then check if the American version doesn't have a different title to the Australian (e.g. Squeak Squad might from memory).