One of my uncles who lived for a while in the south of France is a die-hard rugby fan.
I don't know if he plans to watch London Wasps versus Bath, a rugby game played at Twickenham on St George's Day on April 23, 2011.
I learned that both teams have a 150 year history.
As I mentioned in 2010, Catalans celebrate it as La Diada de Sant Jordi, with roses and books rather than muscles.
The St George's Day Entry on Wikipedia notes that holiday is also popular in various forms in Palestine and also othodox countries like Georgia.
(* image of London Wasps in action from official St George's Day Game page)