Things To Do In London Today: Wednesday 3 April 2013

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GIVE BLOOD: Today’s opportunity to donate blood is at Brewers Hall in the City of London. Free, just turn up, see site for times and conditions

LONDON ART: Heather Leitch has painted some beautiful portraits of London landmarks. Her exhibition, London Town, opens today at Gallery@Oxo. Free, just turn up, until 7 April

GRAHAM NASH: Graham Nash: Life on the Road opens at Proud Camden today, a collection of rock'n'roll portraits taken by the man himself, including images of his acquaintances, travels and self-portraits. Free, just turn up, until 19 May

FILMMAKING: The ICA holds a monthly BAFTA Masterclass Lab where talents from film/television industries share their wisdom with an audience. Tonight it is Archive Producing with Sam Dwyer, who has worked on some of the best music documentaries in recent years. £10/£8, prebook, 6.15pm

GREEN MEDIA: Toby Miller speaks at City University, Northampton Square, to “outline an alternative history of the media…that emphasises their centrality to environmental pollution and worker exploitation”. Free, prebook, 6.30pm

ILLUSTRATIONS: A rare exhibition of Mervyn Peake's original work is on public display for the first time at Westminster Reference Library, thanks to a generous loan from the Peake family. Peake illustrated for books such as Alice in Wonderland and Treasure island. Free, just turn up, until 14 April, launches at 7pm

GIG: If you like your music 'aggressive, confrontational and dangerous with violent lyrics as seen through the eyes of a monster' then you are going to be a very happy bunny — Misfits are playing the o2 Academy Islington tonight. £18.50, prebook, 7pm

LEGO ROBOTS: Nothing complements a good cocktail quite like building a LEGO robot. Drink, Shop & Do has cottoned onto this fact and tonight you can drink and build to your heart's delight. Free, just turn up, from 7pm

RUSSIAN CONVERSATION: Oliver Bullough reads from his new non-fiction work, The Last Man in Russia, and will then be joined by historian Orlando Figes for a panel discussion on the political landscape of Russia today. Free, just turn up, 7.30pm

DRAGON COMEDY: You haven’t seen magic until you’ve seen it done by a man in a green dragon costume with a chihuahau sidekick. Catch Piff the Magic Dragon at Tickled Pig at the Canal Cafe Theatre, plus Ed Gamble, Carly Smallman, Sam Fletcher, Patrick Turpin, Dave Green and Thomas Ward. £8.50/£7.50, prebook, 7.30pm

GAMERDISCO: The Book Club in Shoreditch hosts GamerDisco this evening, where adults can let their inner child run wild with multi-screen projected gaming on various consoles, while DJs play 90s classics and gaming themes. Free, just turn up, 7.30pm

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Vile London Thought of the Day
Time for a fecal thought experiment! Assume there are 8 million people in London on any given day (including visitors). Assume everyone does an average of one turd per day. That means 8 million whoopsies enter the sewers every 24 hours. Now assume an average deposit length of 10cm. This means that, should you take the trouble to lay them all end to end, you'd be rewarded with a turdic line 800,000 metres long...almost 500 miles. To put it another way, you could apply a not-very-hard shoulder of excrement two and a half times around the M25. Every day. Enjoy your cornflakes.

Good Cause of the Day
Could you walk the 100km from London to Brighton? If that sounds like the kind of mission you'd relish, sign up for Blind Veterans UK's challenge, which takes place on 22-23 June 2013. Entry is £99, and you're expected to raise at least £250 for the charity. Those who can't manage the full century might consider the relay option, where a team of four completes 25km each. The charity, approaching its 100th year, helps former Services personnel with visual impairments to lead fulfilling lives. Enter here. @BlindVeterans.

London Weather
Another mitten-magnet of a day, with the thermometer dicking about at 5ºC. The sun will make an occasional appearance. Like belly buttons, dolly mixtures and Kevin Eldon's new sketch show, you're glad it's there, but you're not convinced it's enriching your life in any meaningful way. In summary: hmmmm.