Along with glühwein and bratwurst, raclette stands are standard fare at all Christmas markets in Switzerland (and pretty much every single other outdoor or indoor event, festival or fair, for that matter). The blocks of cheese are heated, and the melty outer layer is scraped onto a flimsy paper plate and served with some potatoes or onions or pickles.
But you can't fully appreciate the raclette experience unless you catch a whiff of the stuff. If only the 'internets' came with some sort of 'smell-o-vision'...