Phineas and Ferb Spot the Diff Marathon is happening on 8 Aug at 8pm on the Disney Channel.
So whats it all about. Basically there will be 4 half episodes and each episode is paired with an alternate version that airs right after the original Phineas And Ferb episode.
Interesting thing is the alternate version has changes to it along with a slightly different name (see episode listings at bottom of post).
