Good idea. Nice links. I will add some:

Boats:

http://www.benettiyachts.it/

Car dealers:

http://www.symbolicmotors.com/

Clothes:

http://www.campagna.it/

http://www.loden-frey.de (Nice store in Munich)

Watches:

http://www.patek.com/
http://www.iwc.ch