Don't know if anyone's watched these, but the cartoon network got permission from LucasArts to do a "Clone-Wars MicroSeries". Essentially the starwars writers worked with some animators to put together a series of animated shorts. The plot picks up where clone wars left off (i.e. during the clone wars)... so they provide some backstory / fill between the last movie and the upcoming 'Revenge of the Sith'. Anyway here's a link so you can watch them online. Oh yea, revenge of the Sith is Released on Thursday May 19th... its the first of the series to carry a PG-13 rating.
Star Wars: Clone Wars | View Chapters Archive