1. Apple muncher
Certainly the tech news of the week: the launch of the new iPad. No, not that one: the other new iPad, made specially for horses. It features revolutionary horse-recognition software and lets you chat to your horse friends and surf horse-based websites, all at the clop of a hoof.
This beautifully realised sketch – check out the not-overdone "having several goes at pressing the 'post' button on Facebook" gag – is a taster of the forthcoming BBC3 show Dawson Bros Funtime, which looks like it might be a whinny. Sorry, a winner.
2. Miniature samba
A cracking tilt-shift (ie the edges of the frame are blurred to give the impression that people and buildings are miniaturised) stop-motion film, capturing all the vibrant colour of last year's Carnaval in Rio de Janeiro. Great soundtrack by Brazilian composer Jarbas Agnelli, too. 3. Big dipper
More than a million hits in two days for this brilliant, witty little stop-motion short by director PES. A hand grenade, a baseball, a light bulb – the ingredients for guacamole with a gaming theme. Don't forget those chips for dipping...
4. Start with Barnet
The latest video from YouTube star Charlie McDonnell sees him visit ten London landmarks in two hours. It's a simple concept for the irritatingly chirpy and good-looking young presenter/blogger/singer/director, but it's charmingly executed and his hair is tremendous.
5. Stop "Stop Kony"?
It's almost statistically unlikely that you haven't seen or at least heard about this: it's perhaps the most successful viral video of all time, with 52 million hits and counting since Monday. Made by Jason Russell for the campaign group Invisible Children, it's a half-hour film about Joseph Kony, leader of Uganda's brutal Lords Resistance Army. Kony and the LRA stand accused of kidnapping tens of thousands of children and forcing them into military service or sexual slavery on pain of death.
The film's been heavily criticised – its opponents say it is several years out of date, is simplistic and partial in its view of Uganda and generally plays on emotions rather than proposing viable solutions. So before you watch, read up a little: The Guardian and comedy writer turned investigative author Jane Bussmann are recommended.
But with all the caveats in mind, Russell's opening point about the new power of social media is a fascinating one. The film's fundamental goal, to bring Kony out of the shadows and shame him by making his name known around the world using Twitter, Facebook and YouTube itself, has been achieved in spectacular style.