If you have conquered all the runs in Megève, then head over to neighbouring Les Houches in the Chamonix Valley. Ski across from Megève to Le Bettex, then take either the cable car or the red run down to St Gervais; from here hail a cab and head for the Mont Blanc Tramway, which is about two kilometres away.
Finally, take the cog railway from St Gervais the the bottom of the Chamonix Valley and spend a day in Bellevue. Test your downhill skills on the famous Khandahar run, where the men's World Cup race takes place almost every year, but don't miss the last train back at 4.50pm. It's an expensive taxi ride back.