Hey!
The best example of what you're talking about is Bob Coopers .
Hopefully that helps.
Sacretis
Edit: I took a second look at that and realized that it is designed from the perspective of a 1.5" table. Dang. Most of it can be adapted if you use another format but it'll be a bit more work. Other than that thread, I don't recall any other suggested builds for mayhem. The only other piece of advice I might have is to emulate the promo pictures? Otherwise, you might actually have to use your imagination...
Think about what you are going to use the table for, and start with the most useful pieces for you. Wargames, you might want to start with straight tiles and flats builds. RPGs, you might want to consider a smaller, more detailed approach. Zombie games like All Things Zombie might fall somewhere in the middle.