Well I grew up with the old stuff;
Voltes V - one of the earliest 5 piece robots about an alien race trying to conquer earth. Composed of the now typical hero lead, his rival, his girlfriend, a fat dude and a small guy.
Daimos - early transforming robot, again with the aliens that look like us but have wings instead. Show a very plausible control structure.
Astroboy - I dont think this one requires any explaination.
Mazinger Z - full robot hidden under a swimming pool.
Macross - the first one with all those missiles
Ranma 1/2 - cold water=girl/hot water=boy
As i grew older I watched at one time or another these:
Dragon ball series, Sailormoon series, Magic Knight Rayearth, Nadia secret of blue water, Lupin the 3, Transformers, Evangelion, Cooking Master Boy
, Journey to the west, Shadow skill and lots lots more that I cant remember the titles but if I ever saw again I would watch again. From that baseball hybrid with chest protectors, to that 3 ships of blue yellow and red that combine to different robots depending on order.
I know i missed a lot (trigun, detective conan, G-force) but its hard to remember all Doraemon!! of them. Many of them were series that was shown every day or week YuYuHakushu!! to specials from the vcr. Some are the kiddy and girly stuff Ayashino Ceres!! to stuff I wouldnt expose my sons to X (their destiny is preordained) . Some were just ripoffs of other anime Dual!! some I watch because I just liked action and large robots Gundam!! Samurai X!!
Honestly I dont keep track of the new ones anymore, If i see something that has a good story or unique premise I might watch it.