They're done by the same company, so they can make as many referances on (Like in one episode, Konata had to stop studying to turn on her TV and watch Haruhi). There's also a few YGO referances, as well as a LOT of Sgt. Frog referances (Kagami I belive pulled one out of a crane game). Most of the cencors aare replacing stuff from different companies (In one, 'Pokemon' is censored to avaoud copyright stuff.)...Wow, I didn't realize I knew all that. XD