Replay a Topic (or "Stealing ideas from Google Wave")

What about an option for "replaying" the conversation a la Google Wave?
I Guess it'll be far down on your roadmap... but looking from what Google presented few weeks back... it has quite a potential....

Maybe you need to tackle it from a different perspective tough. instead of just adding more and more bits of replies as the "Replay" goes on... why not make a kind of "Topic Slideshow" that will display each comment on its own (replies in their context) with some light animations... (like counting the Likes)....

Not a fullscreen slideshow like flickr does... something else, lightweight... a "sit back and enjoy reading" kind of thing that will ease your way to participate in a topic you just encountered... without the need of scrolling back and forth

I haven't seen anything like this yet. did you?