The arena battle. Sure, the Jedi lose it but DAMN is it awesome!
After dropping a battleship from the sky, the Clones march headlong into a sandstorm blasting apart the disoriented droids.
Both of the big fights between Obi-Wan and Jango. The first one, where they slog it out in the rain on a spaceship launchpad. And the second, where they have a dogfight in the middle of an Asteroid Thicket, and Obi-Wan only escapes by faking his death and latching onto an asteroid. The second is particularly notable for being the first time in the movies that we get to see Slave I in action—and it's awesome.
