In this special preview of LEGO Star Wars: The Yoda Chronicles: Escape from the Jedi Temple, Emperor Palpatine debuts his new theme music...and introduces his new apprentice, Darth Vader, who's still getting used to the whole mechanical-legs thing. 
In a second clip, Yoda and Obi-Wan roast Marshmallows on Dagobah as they reminisce about the time they stole the Holocrons from the Temple following Order 66 - which wiped out most of the Jedi - and when the Empire was just starting to take hold of the galaxy.

LEGO Star Wars: The Yoda Chronicles: Escape from the Jedi Temple airs Saturday, May 3 on Disney Channel at 9pm ET/PT and Sunday, May 4 on Disney XD at 7pm ET/PT.