Saturday was the annual "Flugtag" in London. That's the Austrian term for "Flying Day". Home-made flying machines are pushed down a ramp to try and get airborne, then splash down.
Pictures here:
http://www.metro.co.uk/weird/article.html?in_article_id=166616&in_page_id=2&in_a_source=
Full story here:
http://www.telegraph.co.uk/health/main.jhtml?view=DETAILS&grid=&xml=/health/2008/06/07/hflugtag107.xml
And "Flugtag" will also be popping across the pond this summer, with several events held across the US...
http://www.prnewswire.com/cgi-bin/stories.pl?ACCT=104&STORY=/www/story/06-03-2008/0004825762&EDATE=
But the Brits are the champions of this sort of thing-some other upcoming English sporting epics:
The World Viking Longboat Races Championship, Isle of Man, July 5 http://www.iomguide.com/
The 43rd Great Knaresborough Bed Race, June 14 www.knaresborough.co.uk/bedrace
The Lawnmower Grand Prix, Glastonbury, Somerset, July 5-6
http://www.blmra.co.uk/modules/content/?id=3