The original ones I ended up getting crazy good at. This is funny because as a kid, I totally sucked at games in general. I also enjoyed the 3D ones (younger people need to take off the nostalgia glasses and show more love to both Super Mario Galaxy games).
All in all, I am always up for a new Mario game in the classic or 3D style. Granted, it's almost comical that Nintendo keeps releasing "New" Super Mario games, but I feel like they only worn out their welcome just a bit. Again, more people should remove the nostalgia glasses because there are many creative and fun levels in newer titles.
Once we get the second "3D Land" out of the way for the Wii U (Cat Mario!), I am hoping Nintendo will go all out for a Galaxy-like Mario, but with a new hook to it.