ItI second LKS and Muramasa. Relatively speaking, sales for LKS are slightly below average, while sales for Muramasa are impressive. That's certainly a lot better than, say, A Boy & His Blob. Beautiful hand-drawn visuals, compelling unlockables, brilliant cohesion of action and puzzles... less than 100,000 sales.
Seriously, there's just too many Wii games out there that people unfairly snubbed. No wonder developers call the system a bomb.