A lot of professional developers use clay models as a base for the computer model. I'm pretty sure that happened in Spore and Kameo, as well as most games with odd looking characters. I even think it was done for Advent Rising. I would do it if I were better with clay, and I'd be uncomfortable with letting someone handle my ideas in such a stage as art design.
@Robert F, some of the games probably ARE stupid. That's what happens when you get a completely new something in a console. It happened with the DS for a while after launch. I like the tennis, golf, and boxing games on Wii sports. Not a huge fan of the bowling game (but everyone else I know loves it), and the baseball one sucks. The games I
bought for it though were Twilight Princess and Metroid Prime 3, which are both amazingly awesome games. I've also gotten Zelda OOT, Starfox 64, Kirby's Adventure
, SMB, and Zelda 1 & 2 for the virtual console, which all together cost less than a Wii game. I also got Wii Play, which only has 2 or 3 good games, but it only cost $10 more than getting a controller by itself. And just curious, but wouldn't the fact that your parents got divorced be a lot worse than not having HD anymore? ...You don't have to respond to that.
Edit: Oh yeah, a while ago someone got me Wind Waker and now I can actually play it!
And just a pointer, but...
http://nexgenwars.com/
Not a fan of Star Craft. The oldest game I currently play is SMB, but on the computer the oldest is Homeworld, a 1999 game. Still my favorite strategy game ever.