Just did my first oil change on the weekend as well. The oil filter was ridiculously tight, and the oil dripped down the oil pan to the back of the skid (aero?) plate leaving a huge mess. Otherwise pretty straight forward on these cars. Havent noticed much of a difference with the penzoil ultra platinum but it seems to be good stuff.
To keep it from becoming a mess, stick a bit of crumpled paper towels between the oil pan and the plastic belly plate at the back of the oil pan. When the oil runs down the pan, the paper towels will catch it. Makes the job clean and easy.