I myself would prefer a made up language than dubbing in another real language, but I would have to say I did enjoy daneditor's edit which dubbed the Nemoidians and Jar Jar's voices in Turkish.
I posted this on another board but figured this board relates to it more...
This is one thing that always looked fake to me. I don't know if anybody has done this yet, but has anyone considered changing Padme's blaster during the arena battle into something that would look like something she could hold with one hand? Everybody else, in all the movies, had to hold that thing with two hands, but she managed to do it with one. I can't believe Lucas never bothered to correct her on holding and firing a gun prop so it looks real. Sigh.