Babylon 5: Thirdspace

Of the feature films stemming from the B5U, this is my favorite. Looking at it 22 years on, it's amazing how well it has held up. The way its various influences (HPL, Triplanetary, Quatermass, etc) are almost seamlessly incorporated into the mythos of B5 contributes the film's quality, its storytelling and its endurance. Despite the preponderance of CHI and plot-driven action, there are still some great characterization moments, in particular the elevator scene with Zach and Lyta, further establishing Zach as the hopeless romantic always finding (and losing) hope.