Definitely. I recommend looking at G-Force's GOUT Image Stabilization thread if you want to use AviSynth to make your own version of the 2006 DVDs, or Dark_Jedi's GOUT V3 thread if you prefer to just get his upcoming versions that implement G-Force's script along with msycamore's theatrical subtitles and the original theatrical audio tracks.
If you want something that looks closer to the 2004 DVDs in terms of quality, take a look at Adywan's 1980 Theatrical Reconstruction for Empire, and Harmy's Return of the Jedi theatrical reconstruction. Adywan has also said he'll be doing the same for ANH once he's finished with Empire Revisited.