Well, I like to think I can do those manly man voices. But I also like to broaden my horizon and try any sort of voice possible. I did this sort of thing for fun ever since I was a kid, start out with the classics: Parrot voices and Elmer Fudd voice.
If you want a sampling of my vocal talents, just follow the link here:
http://www.youtube.com/user/AngelusCoheed
I have a hobby of doing "Let's Plays" where I commentate over a video game while playing it... Have you ever seen a DVD where they do director's commentary? Well, imagine someone who was not involved with the creation of the movie at all decided to just comment on what he thought watching the movie would be like. That's basically the gist of what "Let's Playing" is. :)
You can also find a sampling of my vocal talent here:
http://www.youtube.com/watch?v=8athKFG2diE
I can also do a pretty wicked Dr. Girlfriend. :D