Party of One gives us a more in-depth look into Pinkie Pie than any other episode in the series.  I've come up with quite a few discussions based on the events of this episode alone.  It certainly manages to surprise you with what the writers put into this show.

DRWolf Narrator by DavionX:
http://davionx.deviantart.com/art/DrWolf-Narrator-377863090

All other Characters and Images belong to Hasbro.