There is no shortage of voice-over professionals who can be the "voice of God" and if that is your need, I can offer something similar. In my case, I also temper the traditional "made for radio" voice with an "every man" feel.
This voice has been used in a series of commercial messages that related the complexities of digital sign systems before my client's system appeared. My client, LobbyPOP, is a key player in the market, and resolved the issues of the past.
Training and instructional videos and guide documents are a special class of voice-over work. Here it is important to map out the most instinctive, logical path for step-by-step instruction, but also it is incredibly important that the visuals offer a truly comfortable experience.