TV.coms episode guide for Friendship is Magic has the description for Season 2 Episode 3 up (which we won't be seeing till the 15th). It looks like anyone can edit these pages, so I'm not sure how actionable this is, but here's the description anyway;
"Panic sets in when the extremely organized Twilight Sparkle struggles to find material for the weekly report on friendship she sends to Princess Celestia."
Could this be the episode where we find out Twilight has OCD? Not sure!