Tom Hanks: 'He Knows You're Alone' (1980)
Before he was one of the most established actors and a constant Meg Ryan love interest, Tom Hanks played Elliot, a psychology student who meets the female lead of this '80s slasher while jogging through a forest.
He provides the meta look at horror films and comments on people's desire to pay to be scared. It doesn't seem as if there is much of a point to his role, but "He Knows You're Alone" plays at our primal fears and is a worthwhile '80s slasher film. You can watch the full film on YouTube.