i actually did go and see it again with my son...
and its even worse the second time around..now u can really se the giant plotholes and bad action scenes...
for instance(and i've been wondering this since the first time i saw it)

Prime claims megatron is gonna use thecube to transforms eaths technology and take over the universe right....
but if the cube has been stuck on earth 10.000 years.....long before technology was around...what didhe want with it then?