Quizzes are having their moment. Today the National Theatre have just launched their free At Home Quiz with familiar faces (Helen Mirren, Lenny Henry, Ian McKellen) asking questions on history, sport, nature and the National Theatre. Join in via the NT’s YouTube channel or Facebook page at 7pm on the last Monday of every month. And if you’ve ever wanted to go on QI, now’s your chance as its producer John Lloyd is the mastermind behind the rounds of questions for a new series of charity quiz night’s from Riverside Studios – and this time we can all join in. Raising funds for Riverside Studios and the Imperial College Healthcare NHS Trust, three dates are confirmed: Wednesday 29 April with Gyles Brandreth, Wednesday 13 May with Stephen Fry and Wednesday 27 May with Jo Brand, 6.30-7.30pm, tickets £25 here. The top prize is a £300 dinner for 4 at Sam’s Riverside. And for something silly call the Wool Hotline from Allbirds on 0800 141 3370. Dial 1 for a chat, 2 for the quick pub quiz, 3 to be serenaded by sheep, 4 for birdsong, 5 to hear from mystery guest Adam Kay, and 6 for a 5-minute children’s story.