I just viewed Conan O'Brien's final statements in closing his last The Tonight Show episode. I've always thought Conan did a pretty decent job in his shows, though I can't say I've watched them with any regularity. However, his closing dialog was one of the classiest things I've ever seen on TV.
Give it a listen (or read) here. This link contains the video as well as the transcript. It's worth hearing his delivery in the video if you can view it. This is good stuff.