Matt Parker is a stand-up comedian and mathematician. He appears regularly on TV and online: as well as being a presenter on the Discovery Channel his YouTube videos have been viewed over 35 million times. As part of the comedy group Festival of the Spoken Nerd, Parker has toured worldwide and is the first person to use an overhead projector on-stage at the Hammersmith Apollo since Pink Floyd. Previously a maths teacher, he visits schools to talk to students about maths as part of Think Maths and he is involved in the Maths Inspiration shows. In his remaining free time, he wrote the book Things To Make and Do in the Fourth Dimension (Penguin, 2014). He is also the Public Engagement in Mathematics Fellow at Queen Mary University of London.