I downloaded Mario 3 this weekend and so far, I've only made it to World 3. This was the first game that I ever completed, back when it came out. I hope I have the patience to work my way through it a second time.
I had been playing SMB 2 and my wife was assisting me with SMB 3, but now that Mario Galaxy is here the classics have been sitting quietly. I've discovered that my platforming skills have atrophied considerably since the heady days of the SNES.