I've been working as an interaction designer for less than a year (student, interning) and have struggled with finding a good tool to use for creating product flows. Programs like Fireworks and Flash Catalyst are great for making clickable prototypes. And programs like Visio are decent for creating flowcharts showing the overall organization of an application. But the two remain largely separated.
For one of our clients I am asked to create a 'clickable demo' for usability testing. I've started this thread to ask you guys what tools you use/prefer/advice to create clickable demos (including arguments would do best). The project is about a recruitment section of a corporate site and will include pretty much dynamic content and some flash elements.