Award-winning comedian Mark Nelson unlocks the best of the 2022 Edinburgh Festival. Mark and his star team of comedians have been scouring the brochures, posters and venues for the best performers, personalities and shows from the world-famous festival in Scotland's capital.This week, Jamie MacDonald searches out another impressive show at the Fringe and discovers it's something he has always wanted to give a go, with varied results.Eunice Olumide takes time away from being a debut comedian to meet other performers with interesting day jobs. She is leaving behind acting, modelling and much more to tell jokes on stage every night for a month - but what makes doctors, lawyers and high-flying tech gurus take to the stage to tell jokes?