that live action project looks rather interesting...and it seems that the T28 they are using will be either the grey or the brown variant, judging from the props...i have the brown variant by Marmit, its nearly pure metal, and fits in with the SOCs. i like it, though there are no gimmicks or anything.
gigantor would be my oldest memory of giant super robots, in the era of black and white TV. i remember that the old shows my brother and i watched often (we must've been around 4 and 5 years old then) were gigantor, marine boy, stingray (gerry anderson's), shintaro the samurai (live-action), and this show about a ninja team with army helmets covered in netting and able to burrow under the ground. these are really vague scraps of memory here!
saw the SG T28's too in singapore, but they were selling them in sets of threes (blue, brown, grey) so i couldn't afford them.