Take your head, wrap it in the American flag and smash it into a mailbox for 15 minutes. Now you're ready for Transformers: Age of Extinction, says CBC film reviewer Eli Glasner.

Michael Bay, the master of bombastic blockbusters, is back this weekend with a fourth instalment of the toy-inspired series Transformers.

Everything has been up-sized for this latest tale: the cast (including Mark Wahlberg, Stanley Tucci and Kelsey Grammer) and characters, the fiery special effects and the defiance of any logic, notes Glasner.

Watch Glasner's review of Transformers: Age of Extinction in the attached video.