I don't think domino-toppling is going to be an Olympic sport any time soon, but one of many (some seemingly rather random) events to raise awareness of the London Olympics in three years' time was a series of domino-toppling runs through the five "Olympic boroughs" of East London. Or in other words, on my doorstep, so I couldn't not go.
In Mile End Park, about 800 breeze blocks were duly lined up to topple their way along the park, across the road, up some steps to go through the Ragged School Museum and down in to a boat on the canal. As this was in the afternoon and the rain was still holding off, a fair crowd gathered. Eventually, as children shouted "It's coming! It's coming!" and a spaniel puppy screamed in even greater excitement, the movement flowed past, accompanied by a decorous stampede of spectators. Even if my camera batteries hadn't failed at the crucial moment, the crowd would have blocked the view.
Later, a run was set up in Island Gardens, to ripple round from the riverside, past the rowing club and the social club into Island Gardens. Another run was set to go down the stairs and through the Foot Tunnel to Greenwich (would it have managed to go upstairs as well?) a couple of hours later, but by then the weather was looking much less promising. I am a fair-weather topple-watcher.
Here's a clip of the run into Island Gardens: