Celebrity Big Brother: Live Launch: Channel 5, 9pm
Emma Willis invites a fresh group of famous faces to move in together and have their every word recorded and scrutinised by the public. The house has been given a glamorous makeover, and with rumours of Dappy and Katie Hopkins heading into the house, how will they all cope?
8 out of 10 Cats Does Countdown: Channel 4, 9pm
Jimmy Carr returns as host for another mash-up of the topical comedy quiz and the words-and-numbers classic. Team captains Sean Lock and Jon Richardson are joined by guests from the world of comedy and entertainment for what promises to be a hilarious show.
James May's Toy Stories - The Motorcycle Diary: BBC Two, 9pm
The Top Gear presenter sets out to build a motorbike and sidecar completely out of Meccano and then complete a lap of the Isle of Man's TT circuit. A total of 15,000 pieces must be assembled to make a full and road-legal bike that May hopes will make it round one of the world's most demanding courses.
