I like playing characters that are complex, that are intriguing, that come from left field, that do things that are unexpected. I don't like people who just follow one line and that's it - that's why I could never be in a sitcom, I don't think. They're not intriguing enough for me.
Now we have hands-free phones, so you can focus on the thing you're really supposed to be doing. . . chances are, if you need both of your hands to do something, your brain should be in on it too.