Continuity mistake: When Anakin saves Obi-Wan from being killed by Dooku, Obi-Wan is lying on the floor right next to the other two. No one moves in the following quick close-up shots, but in the wide shot where Anakin and Dooku start dueling, Obi-Wan is nowhere to be seen. (02:06:35)
Continuity mistake: In the scene on Geonosis where the droids are closing in on the remaining Jedi, the camera keeps cutting close and cutting back out. In only two of these changes is a blue Twilek (Aliens with tentacles on their heads like Bib Fortuna) visible. She has disappeared in the other camera angles. (01:56:00)
Continuity mistake: The Nimoidian mouths are inconsistent with The Phantom Menace. The mouths of Nimoidians (Nute Gunray and his assistant) work inconsistently to how they did in Episode 1. In this film the centre of the mouth moves outwards rather than the edges moving out. (01:47:35)
Continuity mistake: When Anakin and Padme are talking in the star freighter, in the shot where Anakin says, "You're exactly the way I remember you in my dreams.", Padme lowers her head. In the next shot, her head is straight, and she repeats the movement. (00:34:30)
Continuity mistake: As Anakin and Amidala are landing on Tattooine, the sun on the set and the sun reflection off their ship are in different directions. The double sun would not account for this, as they are not far enough apart. (01:03:45)
Continuity mistake: When Padmé is getting in the last gunship Ki-Adi-Mundi's lightsaber changes from blue to green.
Suggested correction: His lightsaber is always blue, although he does help Kit Fisto board the gunship. For a moment, it could look like Kit Fisto's green lightsaber blade is coming from Ki Adi Mundi's hand.
Continuity mistake: After Padme shoots the Geonosians off the chariot, we see a shot of Anakin slicing down come droids. When he turns his body around to face the camera, we can see that he is using the incorrect lightsaber hilt, instead using what looks to be the one that is broken in the factory earlier in the film, judging by the black grips on it. (01:51:30)
Suggested correction: The lightsaber he is using was given to him by other Jedi, they threw one each to him and Ben so I doubt very much it is that particular lightsaber from earlier.