This time it involves a real-life terrifying high-speed crash - but luckily he walks away from it with cuts and bruises.
The TV favourite, Captain Jack in BBC's Doctor Who offshoot Torchwood, lost control of his turbo-charged rally car in an 80mph smash.
Barrowman was helpless as the £120,000 Subaru PLUMMETED down a verged, FLIPPED over four times and narrowly missed a LAKE at the bottom of the hill.
Paramedics rushed to the scene to pull the shaken 42-year-old from the wreckage. They removed shattered glass from his EYE before he was taken to hospital.
The drama unfolded as Barrowman filmed a race for Channel Five's Fifth Gear in Powys, Wales. The show's presenter, Tiff Needell, 57, sat in the passenger seat.
The crash, screened on the show tomorrow, comes three years after Top Gear's Richard Hammond cheated death when his dragster crashed at 288mph.
Barrowman said: "I'm lucky to walk away unscathed. I got a ticking off from my mum afterwards."
The incident will feature on the next episode of Fifth Gear, which airs tomorrow at 8pm on Five.
Enjoyable: Tiff and John seemed to be having fun before the crash occurred
The pair were lucky to survive the high-speed crash, which saw the car flip over numerous times
Barrowman said: 'I'm lucky to walk away unscathed. I got a ticking off from my mum afterwards.'
Thankfully for his matinee idol looks, the Torchwood star was only left with cuts and bruises and nothing permanent.
The crash will be screened on tomorrow's Fifth Gear, which is shown on Channel 5.
Both men were wearing safety equipment to minimise any possible injuries sustained
These images were taken just before Barrowman lost control and show him veering round a steep corner