Counting Flagship games only (No 3rd version, no remakes), 4 by a landslide.
Yea, luckily Platinum saved it.
I mean, I still really liked Diamond and Pearl, but it had some of the most boring moments and added annoying stuff like Rock Climb and Defog. --- One of my best friends has a viral video, check it out! http://www.youtube.com/watch?v=ZrasQOojFyo