Here's a couple more:
Hideki Suzuki's 1/43rd models which i find at least as good as kamimura san's :-)
http://www2.g-7.ne.jp/~koto/index.html
Steve Yeun's site which kind of got me into F1 modeling:
http://www.cifesystem.com/
Eric Evain's site:
http://perso.numericable.fr/~erievain/index.htm
...and for good measure some japanese 1/12 madness :-)
http://www5a.biglobe.ne.jp/~am-kish/menu.html
http://www.hm6.aitai.ne.jp/~ribechan/index.html