Alien: Covenant, an Alien-ish Experience
Alien: Covenant continues the Alien franchise, but not the way you'd expect.
From the DVD Bin: Alien: Resurrection
No Alien franchise breakdown is complete without Alien: Resurrection, no matter what Joss Whedon says.
From the DVD Bin: Alien 3
David Fincher takes the reigns of the Alien franchise with Alien 3, and amazingly finds work as a director afterwards.
Prometheus: The Origin Xenomorphs Were Waiting For
The film Prometheus succeeds as a smart prequel to the Alien franchise.