Ep I - Return of the Sith by Seciors
This is by far the greatest Star Wars fanedit I've ever seen and I've seen almost all of them. (This includes all OT or PT edits) The reason I say that is because it's done the seemingly impossible thing in making TPM ENJOYABLE for the first time. 'Shadow of the Sith' is good but it doesn't make me want to come back to it again like Seciors' edit.