What I don't understand is how the clone army was SECRETLY being made on Kamino, and then show up on Geonosis with ships, land vehicles, etc. How the hell do you secretly build a massive amount of starships and land vehicles!? Think someone would notice if there were like shipyards and stuff. And I highly doubt they built EVERYTHING on one single planet.
I remember in Star Trek DS9, when the Dominion was preparing to send a fleet to the Alpha Quadrant, they hid it in a massive nebula. That at least made sense, but were talking about a planet that Obi-Wan managed to figure out where it is based on some gravitational forces (which didn't make any sense to me) in like 10 seconds.