A selection of TV cock-ups, mishaps and gaffes, including Richard Madeley's infamous impression of Ali G live on This Morning, Eamonn Holmes's uncomfortable interview with taciturn magician David Blaine and the moment when Tom Cruise bounced like an excited child on Oprah Winfrey's sofa. Plus, the moment when IT worker Guy Goma (at the BBC for a job interview) was mistaken for a journalist and put live on BBC News to discuss a complicated legal battle