After Anakin's Mom is buried outside Uncle Owen's, why do we not see the gravestone in the later Luke years (yes, Owen could have had it remved so as not to have to answer suspicious questions, but still...)
Also, if R2D2 can fly, as he demonstrated in Attack Of The Clones, then why did he not help his later friends Luke and Leia out of trouble on more than on occasion in this way? Sure, this circuit could have been fried, but surely he would have gotten an overhaul somewhere down the line, and he looks pretty spiffy at the end of A New Hope.
Obi-Wan, in A New Hope, doesn't "recall owning a droid". Bad memory old man - sure he never actually "owned" R2, but surely he would have remembered this little robot hanging around his old friends. Even if - as many have tried to speculate - there are many R2 units about, wouldn't Obi-Wan even have the slightest "what if?" moment and perhaps consider it could be the same droid?
There are more, but I don't have the time right now...
