The last time Mark Rosenzweig was on Parkcast he caused uproar when he said he thought Nemesis at Alton Towers was overrated and that Inferno at Thorpe Park was the best inverted coaster in the UK.

So this week we've got him back to talk us through his top rated inverted coasters and its a subject he knows a lot about, as he's ridden every single inverted coaster in the USA. I think his No.1 might surprise you!