As for “The Gathering”. are the live action scenes crops or was it framed for widescreen and the film master was preserved in anamorphic (also which cut is it, the original or SE) ? I know some will people will point out that TG apparently wasn’t made widescreen in 98, but Straczynskinski was also working on a limited budget and simply couldn’t afford to rescan every frame.
It's the SE, the preview starts at the end of the scene with the dust dealer in the customs area. Comparing the scene in the iTunes preview to the version from the DVDs, it seems to be the same source video, but cropped and upscaled. Unfortunately, to prevent clever pirates from painstakingly screenshotting all hundred and fifty-thousand-odd frames of the movie to make a bootleg copy, screenshots are prohibited on iTunes purchases and previews, so I can't post a comparison.
All indications have always been that "The Gathering" wasn't shot with safe sides for widescreen, unlike the mainline series, and that's why it wasn't remastered in widescreen with the rest of the series in 2000.