I have raced at the Bercy Supercross. In 1984, we actually raced it twice. The first race was right after the Daytona Supercross in March, and then we raced again at Bercy in December.
The very first year was cool. But the track was an unknown. When we (the top American Supercross racers) got there, we realized they (the organizers) didn't know fully how to put on a supercross. The track was so narrow, it was hard to pass, it was a 'European' supercross.
But also that first year, I realized how awesome a 'show' can be. Their show was awesome in Bercy! All of us were surprised at how great it was!
My very first thought though, the first time I got to Bercy: "Wow, this is a small track!" But I raced there again in 1985, 1986, 1987, 1988, and 1989. I've also gone another time after I retired from professional supercross and motocross racing.

Bercy 2009
Alessandro Puzar Gaston Rahier Steve Ramon Tyla Rattray Chad Reed Warren Reid Pierre Renet Marc de Reuver
Jimmy Button Michael Byrne Antonio Cairoli Trey Canard Håkan Carlquist Ricky Carmichael Danny Chandler Eric Cheney
Andrew McFarlane Brett Metcalfe Heikki Mikkola Auguste Mingels Marty Moates Guennady Moisseev Bobby Moore Blair Morgan
Tim Ferry Ashley Fiolek Ernesto Fonseca Lauris Freibergs Paul Friedrichs Steven Frossard Eric Geboers Sylvain Geboers
Christophe Martin Mickael Maschio Connor McGechan Jeremy McGrath Andrew McFarlane Brett Metcalfe Heikki Mikkola Auguste Mingels
Joël Smets Jeff Smith Marty Smith Steve Stackable Jeff Stanton Rex Staten James Stewart Jr Brian Stonebridge
Dusty Klatt Arne Kring Brad Lackey Arthur Lampkin Steve Lamson Grant Langston Danny LaPorte Mike LaRocco