yup. I use simple:press plugin to do that, I really like it. It basically inserts a standard looking forum into a WP page. I made a custom page template within my theme that is a copy of my normal page template just made the content area wider and removed the sidebar. Took about 10 minutes.
You also have bbpress as an option, which is what this forum uses. I'm not sure of the exact steps to integrate it, but a simple google search will net you lots of results
And finally, buddypress.....which adds social network functionality to your site, but also can include a bbpress install
google those options and see what you think. There are other forum plugins if you search on here as well, I'm just not familiar with them