"View all pages" feature for forums?

Forum pages currently split at what, 20 posts or something? A "show all" feature that lists every post in the thread without splitting into pages would be nice.

Take a look at a multi-page supertopo thread for an example. Up top, next to the pages navigation links (forward, backward, etc...in mtnproj case it's page numbers 1,2 etc).

My apologies if this has been discussed. I'll often load a bunch of pages for later reading before leaving a wifi connection, or in long threads it's nice to see the entire debate.