EP.1: The scene where Amidala looks out over Theed getting invaded. All scenes with Twi'leks in them
Ep.2 Chase through Coruscant, Death Sticks Scene, the ending with all the Clone troopers arriving on Coruscant then cutting over to Anakins and Padmés wedding. All scenes with Twi'leks
Ep.3 Battle between Obi-wan and Anakin, Order 66, All scenes with Twi'leks
Ep.4 Cantina, Luke looking at sunset, All scenes with Luke and Han on the death Star, Throne room scene
Ep.5, Can't choose, too many.
Ep.6 Oolas dance (original version with Lapti Nek,
) Oolas dance in the '97 version, because of one more twi'lek (Lyn Me) though I do wish they'd kept Lapti Nek and not replaced it with Jedi rocks. Rest of the film.