Clever, believable, and super fun to watch. It totally has replay value.

A film with more than the usual spoiler issues. Talking about it in any detail feels akin to handing you a gift-wrapped present and saying, "I hope you like it -- It's a thriller about a diabolical secret experiment."

The movie runs out of plot and jokes well before the end of a two-hour running time, long for a light comedy.

A film of deceptively outspoken contemporary relevance, this is cinema at its most alert, alarming and alive.