I got to see this movie last weekend (gloat gloat), and I have to say, it is on par with episodes IV (A New Hope) and V (Empire Strikes Back). If ep's 1 and 2 scared you away, you might want to reconsider for this one.
Now, I am going to say something shocking, and it may just be my giddiness speaking, and maybe my opinion will change in a few months, but here it goes:
Ep III is now my favorite movie of the entire series.
It's that good. Go see it!
(disclaimer: Going to see this movie makes my employer wealthier
)