I must say that Gau is my least favorite character in the FFVI. Aside from the incoherent blabber, I just don't find him all that useful. I never know which rage to pick when fighting and once you pick one that's it, he's into rage mode and there's no stopping him. Reminds me of the beserker class from V which I never cared to use. I also don't really see all that much difference between the rage skills themselves. Yeah I know that each skill has an attack and some other sort of effect but since I can't control when that special skill is used there's not a whole lot of strategy with him. On top of that, if you want to expand his rage abilities you have to wander about the Veldt and then listen to Gau's ramblings over and over and over, "Vwah oooo, I'm Gau!"
So, am I the only one that feels this way, or do you find him and essential party member and can't play VI without him. Post your opinions!