I love making my own vocals.
Not singning vocals, but rather talking in rhymes - "poetry".
For this I use 1- deep vocals, which I'm sure most of you use. And sometimes I like to try using 2- robotic vocals.
I use a dynamic mic, mono, and record in Edison (Fruity loops).
Then I usually use the monophonic pitch, and pitch it down a lot (-12 semitones) this gives a nice crisp shift that doesn't sound like a b-movie demonic voice.
Then after i bounce that to a WAV I usually use a "regular" shift down but only 1-2 semitones...
Afterward a lot of EQ and perhaps a bit of Ohmicide.
When making Robotics, I use Audacity with vocoder effect.
I "stole" the genreal idea of having 1 voice, multiple vocoder bands (40-70), 0% original voice, and radar needle freq. around 2-40ish.
The freq can be adjusted to match the notes that are playing.
If anyone likes the idea, or doesn't understand what I'm saying I'd be delighted to make a tutorial

Peace out!