Maysoon is a Palestinian-American comedian and actor who founded her own comedy festival and self-funds art camps for vulnerable kids.
Jack shot to fame aged 14 when he appeared on last year's series of Britain's Got Talent, and has gone on to act and write his own book.
The intensely-likable Josh Blue is an American comedian, artist and sculptor who rose to public attention on another talent show, Last Comic Standing. His second name really is Blue.
British-based Firefly friends may recognise Francesca from Grange Hill and Ricky Gervais's Extras amongst the many other places this popular comedian, writer and filmmaker has popped up.
Laurence Clark is another multi-talented comedian who combines making people laugh with writing, presenting, acting and campaigning.