Naruto V Pain. ( I know the 6 tails fight was bad, but I had only seen DBZ before and that was also a long time ago so I was only starting anime again).
As i.recall it I use to hate Naruto until the day my cousins forces me to an episode, and thats where it all started from, the episode was in part 1 when they were on there first offical mission with the bridge builder
^ Agreed. But my favourite fight in Part 1 in the beginning was definately Rock Lee vs Gaara, that made me pumped to get through the rest of the Chunin Exams. And that was my favourite arc, mind blowing and brilliantly entertaining. =DD But of course, every fight in Naruto is.