Replaced NGK Laser Platinum spark plugs with NGK Ruthenium HX plugs on my 03'. Oil change with Amsoil 0w-40 Signature Series oil and Amsoil EA filter. Why 0w-40 instead of the recommended 5w-20? The 0w will flow a little faster on cold starts in the winter and the 40 will protect much better on 90F+ (outside air temp.) summer days.
Also, I called NGK and verified that sparkplugs.com is an authorized distributor/seller (they didn't have them listed on their website) so, I get real plugs and not counterfeits. Yes, there is a whole world of fake/counterfeit auto parts out there and I would recommend not buying auto parts off of Ebay. If you're not buying directly from the stealership, definitely go to the manufactures website and look up their authorized distributor/seller's and if they don't have this information posted give them a call.
Here are some fun for the whole family spark plug pics: