Hi,
I think it would be either above the forum list with:
Title - category - poster - date
Or an option for the sidebar with same but condensed
Important to be able to exclude forums,
And I would Love if it also shows the little thumb (tiny) of the poster
To complicate at some point,
Show only 1 post per thread , so that all threads get a chance, otherwise 1 overactive thread might take all positions.
Also, important to select how many threads to display.