I realized after I posted the chili sauce recipe that maybe not everyone knows how to quickly and easily peel tomatoes.
Get a really big pot and fill it 2/3 full of hot water. Bring to a boil.
Drop the tomatoes into the pot, don't crowd them. Let them cook for about a minute until the skins start to split, remove from the pot and drop into a sink full of cold water.
Using a sharp paring knife, cut the stem end off. The skin should just slip right off. If the tomatoes are not vine-ripe, they'll be a lot harder to peel.
If you have a pasta cooking insert, it works great to get lots of tomatoes in and out in a hurry.