Um, isn't the point of it that...
That they aren't actually robots?
I say Tengen Toppa Gurren Lagann without a doubt in my mind.
Gundam Seed, Code Geass: Lelouch of the Rebellion and Infiniti Stratos
The Big O. It's a classic.
Too bad NGE is more about mind****ing and less about "robots."I say Neon Genesis Evangelion!
Infiniti Stratos
zoids.
Cyborg 009. Yea I know it's not a mech anime but they're still technically robots.
TTGL and NGE. That was an easy one.
How Asuka died was terrible.
Only to be brought back and choked... again.