X-Men 2 (2003)
- when Jean and Storm are in the church looking for Nightcrawler, Jean is wearing a jacket with a phoenix on the back
- as Jean Grey uses her powers, a fiery aura appears in her eyes
- and at the end of the film as the camera is gliding over the water, a large, bird shaped shadow can be seen. This is most likely a reference to Jean Grey being resurrected as the Phoenix.