Personally, I find Galaxy games to be beautiful in a real Wii if you play them in a 20'' flat screen TV, but not in a HDTV.
To enjoy them in HDTV you need a computer and emulation, at least to me.
I just can't play 3D games that pixelate. With 2D everything's fine, but with polygons I just can't. If a game is made on 480p, it will look pixelated in 720p or 1080p.
However, with emulation, both Galaxy games are the best looking and most gorgeous Wii games.
Both Zelda games are amazing, too!