I'll third 'Commando.' It's the quintessential delightfully over-the-top and implausible 80s action film. Ahnuld is a poet of death who delivers quips as expertly as he delivers circular saw blades to the foreheads of random fictional banana republic henchmen inexplicably building a rebel army in plain site off the coast of California. He finds a small army-sized cache of rocket launchers and machine guns at the local gun store (naturally) and spends the entire last third of the movie stuck in God Mode killing more people than the Black Death. The closing theme song by Power Station is the very definition of 80s cheese mixed with awesome. It also has the distinction of being the only movie featuring a Matrix that gets better in the last part.
LOL... I have to see this flick now, after seeing Ahnuld actually pick up a whole frakkin' telephone booth with a guy inside of it, LOL.
[Insert pun about Dr. Spock here.]