I liked 2 the best, but it's mostly because I'm a sucker for the forbidden love that starts between Anakin and Padme.

Also, I don't know who noticed. A digital rendering of Hayden Christensen appears in the 2004 DVD version of Episode VI, as the spirit of Anakin Skywalker. This replaced Sebastian Shaw as the ghostly image that appears beside Obi-Wan Kenobi and Yoda at the end of the film.