Here is a another positive review for Cloverfield (and SPOILER-FREE!), from Jeffrey Wells at Hollywood-Elsewhere.com.
Cloverfield is a monster film unlike any other -- a complete original, but no less of a rock' em-sock 'em for that. It's amazing in that it's so short (by my watch about 74 minutes without credits), and yet so fierce ... This is not your father's Ray Harryhausen rampaging monster flick. Those movies, comparatively, were parlor dramas for the tame of mind. This movie is REM madness.You can read the rest of the review at Hollywood-Elsewhere.com.