I would rather see Adric return than watch Catherine Tate.

I sat and watched the latest episode thinking-ah this is where RTD tries to make us think how wonderful Donna is-how we MUST now love her because she is Soooo central to everything. I dont care if she is 'central'-in all likelihood you could write episodes suggesting almost every character in the series had a similar influence. She is still annoying and gurns as much as the doctor - one gurner acting technique I can just about cope with-but not two.