Installed Wii Fit Plus PAL (i.e. the European version) instead of Wii Fit NTSC (the American one). Not only did they change the trainer lady's voice to Queen's English, so now she sounds like an old woman, but they also altered a bunch of the phrases. Like, before she'd cheer you on with "You're doing great!", and now it's a dreary "You're doing fine!". To me, it sounds like the level of praise dropped, though in reality it's just the cultural context that shifted. To me, "fine" in English means "okay" rather than "excellent," because I'm Americanized.
On the bright side, they added a lot of new (and hellishly hard) exercises, which is great.