ACM Queue - UML Fever: Diagnosis and Recovery: Sidebars from Scott Ambler and Craig Larman: "My observation is that lean and effective organizations conduct upward of 90 percent of all modeling as sketches on paper or whiteboards, with only a few using sophisticated software-based modeling tools. The reality is that the value is typically in the modeling effort itself, not in the model. Why is it that so few software modeling books or academic papers seem to focus on sketching in terms of recommended best practices? Shouldn't we help developers to get better at what effective modelers actually do in practice, instead of trying to inflict the questionable visions of tool vendors and/or inane academic theories on them? "
Yes -- start with this book