Well, might be a matter of differing interpretations, but I seem to clearly remember the otherworldly entities at the end of Gasaraki being deeply nonhuman inhabitants of another dimension who weren't, I thought, portrayed in an occult manner, just alien and not particularly knowable. (There were no glowing Trees of Life manifesting anywhere, for one thing.)

Speaking of which, having seen the two end-of-series movies, I have at least a rough idea of them. As to Gundam, well, it's basically the ur-giant-robots-as-space-tanks anime. I've seen the "movie trilogy", which as far as I can tell is basically the original Mobile Suit Gundam series with the credit sequences cut out.

(I've also seen the live-action Gundam movie G-Saviour, which takes place long after the originals. Most people despise it, but I enjoy getting to see photorealistic mecha dueling on the hull of an O'Neill colony, being unsophisticated and all. Of course, when Blu Mankuma appears in an important supporting role, that usually tells you something, even if it's not Mankuma's fault. With great originality, I refer to this phenomenon as the Curse of Blu Mankuma, which strikes many actors, particularly in low-budget genre fare: good and charismatic actor you can't help but like, and everything he's in always sucks. It struck Rutger Hauer sometime in the 1980s, and has slowly infected Max von Sydow.)