Who: Kakashi Hatake, Monkey D. Luffy
Where: Lee's Dojo
What: Luffy's looking for Nami, but instead finds Kakashi (or is it the other way around?). Luffy takes Kakashi up on his promise to give him 'ninja fighting experience'.
Watch for: The final blow. Ouch.

( Lee's Dojo is gonna need a new door.. )