My own anti-procrastination technique is to tell my wife that I'm going to be working on X project, and that I'll talk to her about what I've been doing when I'm done. After that, I find that all it takes to put myself back on task is a gentle reminder to myself that my options are:

• Get some work done
• Admit that I didn't actually get much done
• Lie about my progress

My natural aversion to options two and three is usually enough to get me back on task.