The easiest way to peel a tomato is to blanch it.
Place about 2 quarts of water in a medium stock-pot and heat it to a shiver (see Poaching). When the water is hot, put tomatoes in at about 15 second intervals. Let the tomatoes rest in the water for about one minute each and then transfer to a pot of cold water. After chilling for about a minute, place them on a towel to dry. The skins will peel off easily.