The model that really matters is the one that people have in their minds. All other models and documentation exist only to get the right model into the right mind at the right time.
– Paul Oldfield
You may be a great facilitator, an excellent “elicitor” of requirements; your analytical skills may be second to none, but if you can’t package and present information in an easily usable form, then you’re not completing the job as a business analyst.
Here are some great product links and quotes on rapid UI prototyping that have helped reinforce the value of visualized requirements in my mind, and that I thought you might find interesting.
Adrian Marchis at Modern Analyst posted a helpful article on process mapping describing, among other things, diagramming the “as-is” process as part of the overall process mapping exercise.
A very interesting and active discussion has followed concerning whether modeling the “as-is” process is valuable, or a waste of time and effort.