I'm not so sure if it is really tasteful - but it's at least a great advertising gimmick - the 24kt Gold 'bling-bling' Macbook Pro that was just recently pimped 'decorated' by the boys (and girls?) of Computer Choppers:

The device is completely gold-plated, the logo jewelled with diamonds.
Available for about 2000 US-$ - of course that refers to the decoration only - the MacBook Pro is not included in that price..