The second player in Super Mario Galaxy really makes a huge difference. My wife and I had a blast working together to beat it. The ending was pretty sweet as well. Let me know what you think of the ending Gnizmo when you get there, I was pretty pleased with it.
My Tag: 2 Timothy 3:1
Jesus Christ is the ONLY way to Heaven! (John14:6)
Every second 2 people die . . . What if this is your second?