Fishing.US is a seamless integration of several scripts, built on primarily Vbulletin templates and user registration system. Drupal handles the front page, user news and blogs, articles, and most of the "static info" type pages. And as always it does a great job. Yedda questions have also been integrated into the blogs and article nodes.
on the drupal front, very little in the way of additional modules were needed. FCKeditor was used to give the members an easier time creating content, image modules were installed so uploading images and placing them into nodes was a little nicer. Most of the modifications were just PHP code added to pages to grab the appropriate content for the various landing pages.
Fishing.us is built to be a feature rich fishing community, complete with forum,Fishing news / blogs, Photo Gallery, Classified Ads, Reviews, Topsite, and a few other toys for the members.