You're terrified of getting cold called and stumbling to remember the procedural posture in Pennoyer v. Neff. Alternatively, you can't wait to get called on and perfectly recite Pennoyer's procedural posture and throw in some background details on the Pacific Christian Advocate and 1870's Multnomah County, Oregon. (Really, tone it down, gunner.)
What do you do to prepare? You brief the case. But here's a hint: you don't have to do it all yourself. Westlaw can do a lot of it for you.