I strongly urge you to read the very funny Transformers 2 FAQ. An example quote (and it just gets better from there on):
Are there honestly 46 new Transformers in the movie?
I have no fucking clue. It’s impossible to tell most of them apart except for Optimus and the Racist Twins (there’s another yellow Autobot who I constantly thought was Bumblebee).
(via Wait till I come!)