Originally posted by: Shinoro

Did anyone see how quicly Naruto was able to summon chakra from the Kyuubi? He didn't even have to use all of his natural chakra in order to get it, I was really surprised about that, and stunned no one else picked up on it.
Remember, Naruto and Kyuubis' chakras are merging as time passes. So therefore, it should be easier for Naruto to summon up the Kyuubi chakra.

Edit: I also beleived that whenever Naruto summons Kyubbi's chakra, it accelerates the merging process. Maybe soon in the future Naruto might start experiencing "side-effects" because of it.