Bitter and hateful, the Grinch is irritated at the thought of a nearby village having a happy time celebrating Christmas. Disguised as Santa Claus, with his dog made to look like a reindeer, he decides to raid the village to steal all the Christmas things. Stream How the Grinch Stole Christmas! free in HD on Gemflix — no signup, no account. 1966 · 25 min · Animation, Family, Comedy.