SELinux at finished a few hours ago, and there were some really good SELinux talks. Miroslav Grepl summarized the SELinux work over the past year, and gave a preview of what we can expect over the next year. Milos Malik presented his work on a SELinux troubleshooting flowchart; if you're having problems with SELinux denials and don't know where to start I suggest giving it a try.