Fuck, Birdman was awesome. BIRRRRRDDDDMAN. Hell yeah.
70's animation is mostly doo doo across the board. Even the animu is mostly poopy, but there's some goodies. Notice how the budget is thrown completely out the window in 90% of toons in the 70's. Even the Disney is surprisingly low budget. As much as I love it, the Robin Hood movie from the 70's is low budget all around, I mean, there are scenes are entirely ripped from Snow White's famous rotoscope scenes. They didn't even try to alter them, you'll see a similarly animated scene except with a different cel. Replace Snow White with a character from Robin Hood and you've got Robin Hood!