What is your favorite scene in the entire show?

Mine has to be this - I absolutely love how the Abyss-reflection plane of the Upside Down looks, i love how this frames the actual way the Upside Down functions (a two-way reflection of 2 dimensions, with 2 parallel planes, separated by a layer of clouds and lightning), i love the visuals, the sound design, i love the way it serves as the culmination of Vecna's overall plan we've seen slowly unfold from 1 onward, and i love how it puts an emphasis on the Megarift from Season 4 - directly showing us why it was created with the use of camera angles, lighting, effects, etc. This shot itself shows us why the Military sealing up the Rift means literally nothing to Vecna or his plan because the Rift is still there in the Upside Down - completely open - glowing and waiting for his plan to unfold.