Here's my list:
-Matte plastic: 303 Aerospace Protectant
-Shiny plastic surfaces (includes instrument guages, headlights, rear plastic window--oh wait, you dont have one!

, and tailights: Plexus
-Leather: Lexol, but I understand Leatherique is superior
-Rubber: 303, BMW's Gummifledge, or Zymol Seal
-Top: Raggtop
Best weapon against the sun? A good car cover.