I, however, have never had a problem with it. Granted I think the burping alien is a little to juvinile for me, but I can over look it (Lucas' colors starting to come through in that one).
I saw ROTJ as a story where military strength, technology, and man power aren't always the winning factor. Sometimes the best victory comes through innocence and a willing spirit (i.e. the Ewoks). The Empire never saw it coming. That is why the Emperor couldn't foresee it. Good was clouding his vision.
And Vader getting redeamed at the end is a classic Jesus Christ teaching that I hold very dear to my heart. That no mater what you have done, and no mater who you are, you will always be loved (i.e. Luke's love parallels that of Jesus') and you are never so far into the darkside that you can't come back and be saved. No one is a "lost cause."
I cry every time Yoda dies, and have never found the dialogue in the film to be anything but wonderful. The summer of 1983 was the season I was born, and at that same moment Return of the Jedi was playing at #1 in theaters around the country. It's my personal slice of the original trilogy that I will cherish forever.
Say what you will about ROTJ, but it holds a special place in my heart.