[RedBarchetta]

Zaino or Pinnacle Souveran. Both available via mail/Internet. Both expensive and well worth it (especially for darker colored cars). Zaino is more "polish" than wax, but has outstanding reflective qualities, goes on/off easy and requires multiple coats for increased performance and gloss. I haven't used Pinnacle personally (yet), but my buddies on the corvette forums swear by the stuff for getting the deepest color out of dark paint.

-Deano