Johnny Depp was the lad pulled into the water bed in Nightmare on Elm St 2 (or was it 3?)
It was the first one. Saw it the other night for the first time in decades at an outdoor cinema night, and was surprised to see "Introducing Johnny Depp" in the opening credits. And then still managed to get through the whole film without realizing which character was him - obviously this was filmed before his growth spurt/plastic surgery/usurpation by evil twin.