Anakin has his lightsaber in his hands immediately
after having his handcuffs cut off on the bridge of General
Grievous' ship. In the next shot, he has to force-retrieve it from
Grievous.
When Obi-Wan meets Anakin on the landing bay of
the volcanic planet, Obi-Wan comes down the ramp from the ship and
removes his cloak. It lays across the end of the ramp. The shot
changes, then comes back, and the cloak is now bunched off to one
side.
When Anakin has just had the bad dream, Padme
comes out wearing the nightdress with rows of beads around her
arms. In one shot, the beads on her right arm are twisted, in the
next, they're straight again.
When Mace Windu and Palpatine are in his office
after the lightsaber battle, Palpatine scrabbles into the corner as
Windu paces towards him, ending up directly over him with
lightsaber pointed at his throat. As Anakin walks in, Palpatine is
already backed into the corner and Windu needs a few paces to get
to him.
When Samuel L. Jackson says "I don't think the boy
can handle it, I don't trust him" his lips don't match his dialogue
when he says "I don't trust him".
After the crash landing on Coruscant, Anakin,
Kenobi, and Palpatine take a shuttle to the Jedi Council. In the
first shot as the shuttle is landing, all shadows are parallel with
the edge of the landing area. In the next shot when the shuttle
doors open, all shadows have shifted 45-degrees clockwise.
During Obi-Wan's departure scene on Coruscant,
when he is telling Anakin how proud he is of him, Obi-Wan's eye
color shifts from Ewan McGregor's' natural blue-green eyes to a
dark brown.
During the Anakin/Obi-Wan fight scene Obi Wan
switches lightsabers with Anakin. When Anakin is strangling him we
can definitely see that Obi-Wan is holding Anakin's lightsaber in
his right hand (note the hilt design), but when the shot is
reversed Obi-Wan is holding his own lightsaber in that hand.
