make shallow incisions at the back od the tomatoes. dip in boiling water (i use a kettle) 30 seconds after..more or less,,, take out the tomatoes and dip them in icy water;if you are using for salads or just let them cool down peel.
for the cherry tomatoes. pierce them with tip of a pointed knife and dip them 15 seconds in boiling water. a good idea would be to put them in the freezer 15-20 mins.