Tami Stronach was in The Never Ending Story with Barret Oliver.
Oliver was in Cocoon with Wilford Brimley. (If TV was allowed, we could end it right here, because Brimley played Noa in the Ewoks TV movie: Battle for Endor.)
Brimley was in My Fellow Americans with Jack Lemmon.
Lemmon was in JFK with Joe Pesci.
Pesci was in Goodfellas with Samuel L Jackson.
Let's try to find another hard one...where's that worst 100 movies list.
Here: William Ragsdale (bad movie #55, Mannequin: On the Move)