Jayce and the Wheeled Warriors was one of my favourites as a kid.
I hope they bring out the whole series on DVD (UK)
Another of my favourites as a kid was Mighty Orbots which was canned due to copyright infringement with Gobots. lol.
Here's one I watched as a kid...very sketchy though:
Mecha animation whereby one of the mechs had a finishing move that was the same as a baseball pitcher throwing a ball. There were other mechs but I forget. My memory of it is REALLY vague though. I think one of the machines was called "Pegasus", maybe? Or something similar. I mean I remembered Legend of Orin as Legend of Orion. lol. Close but no cigar.