[richcon]

By the way, what does “deep” integration involve? When I think of integration, I think of sharing logins between WordPress and bbPress, and possibly using the same template system so both sides share the same header and menu system.

On another side I solved the template issue by having a single “master” template system and CSS file that handled the page header, main menu, footer, and sidebar, leaving the specific bbPress and WordPress templates to only handle the stuff inside the main content box.

As for handling logins, I made the login button go to the bbPress login page (in all its themeable glory) no matter where you click it.