Favourite Dean Stockwell performances?

In tribute to the great actor who has just passed away, what are your favourites of his many fine performances?

Child Dean

The Boy With Green Hair
Down to the Sea in Ships
Kim
Stars in My Crown

Young Adult Dean

Compulsion
Long Day’s Journey Into Night

Older Dean

Blue Velvet - Dennis Hopper received a great deal of deserved acclaim for his terrifying performance, but Stockwell was hardly less memorable in his brief appearance.
Married to the Mob
Quantum Leap - so nice that he had such an iconic and beloved late-career role in this fine show.