Our first press release was talking about our first year anniversary. It was more of a test then anything. Recently, with the help of Lee Odden and his team, we launched a press release for the launch of our new forums. The release was titled Search Engine Roundtable Launches New SEO and SEM Forums with All Star Moderators.
Overall, I think Lee and his team did a great job. I wrote the first draft, the mods helped tremendously revise it and then Lee's team optimized it for us.