See only posts by the thread starter within a thread?

[ludachris]

I've got a fairly unique situation here - I have a sub-forum that's used more as a journal. A thread is started and content is added over time by the original thread author. I'd like to find a way to give the members a way to view that thread and click a link and have all the replies from people that are not the original thread starter be filtered out. This way you can quickly see all the replies by the author of the thread. I know this is possible with the Search feature, and maybe I'll see about building a pre-loaded search link if there's no other way of doing it - one where you can see the full posts not just the search results. But I figured I'd ask here to see if anyone has any ideas. Maybe there's a hack out there that does something similar.