I just happened to be looking for Roger Ebert's review of Watchmen, when I spotted this entry on his front page:
Wardrobe malfunction in Paris:<br>Emma Thompson to the rescue :: rogerebert.com :: News & comment
Read it.. watch the video linked at the bottom. It's hilarious.
Summary: French awards show. American & British actors sitting in front row. French comedienne presenting award intentionally baring breast as a joke. English actress cringes with embarrassment and runs on stage to fix the wardrobe.
Great stuff.