What about a trip to LeMans? Huge social event too mixing motorsport with tents and BBQ's!
250,000 people in a small town over a weekend.
Sounds like fun, is actually a bit of a pain in the ass, unless you're there to get very drunk and fall over.
Worth doing if you haven't before, mind.
Good weekend to go to Nurburg though - most of the idiots from the UK are at Le Mans!
To be honest, with the exchange rate doing what it is at the moment any sortie into Europe in 2009 looks bloody expensive at the moment!