I'm as big a TF Gen 1 fan as you can get, and I like most of the spin offs.
No, I don't want to start a "who's the bigger fan" thread.
I just went to TF3 with the family, and since I hadn't heard any reviews I felt fit, here is mine.
The general story was a fit good. Anyone who's seen the G1 cartoons, can pick up on the storylines and start filling blanks quickly, but not all of them.
The Star Trek tie ins got a laugh, with a Spock clip, and of course, his voice.
The needs of the many...
The new girl... A very nice intro... Underwear, need I say more.
The music I didn't care much for, but with the tone of the movie did fit.
The CGI was great, a must on blue ray. I would like to see it 3D some day.
Of course there are things that could have made it better, but it was 2 plus hrs. already. I just can't cut down a movie I saw 20 mins. ago, especially since I want to see it again.