Subscribed Threads

One of the other forums that I frequent (it's a vBulletin template) has a Subscribed Threads feature that I love. Basically, you can subscribe to a thread by commenting within the thread or by clicking on the Subscribe option. After that, you can go to your Subscribed Threads page, which will consolidate of of your threads in one place, regardless of which forum the thread is in - it's great to keep track of new activity in threads that you're interested in. Is there a similar option or plugin with phpbb?