In the grand tradition of other sparse but substantive reviews here (Sopranos, etc.), "Transfomers 2 - don't bother - it sucked." Links provided for your benefit.
Cagey hates it.
"A summer crockbuster."
"Accelerating American down its downward spiral of intellectual iconoclasm."
Ebert hates it.
Topless Robot hates it: http://www.toplessrobot.com/2009/06/bonus_robs_transformers_2_faqs.php