"Cloverfield", but set in LA, and on the action side of the action/scifi line, in that the characters seem to be there primarily as a justification for seeing things blow up. But, I've seen much worse as action/scifi movies go. The action is thrilling, creature design is fun, the visuals are appropriately awesome, and overall, if you're in the mood for a braindead scifi action flick, you could do much, much worse. Plus a fun cast starring Eric Balfour and his chin, plus that charismatic guy who played the police sergeant in "Dexter" and always wore the little panama hats.