How do I add last X posts in right column?

[dotgarden]

Like this:
http://milepoint.com/forums/

I'd like to post the last X topics on the right side, sort of like a newsfeed... is this an addon? How to do this?

 

[Paul B]

These 2 add-ons perhaps?

http://xenforo.com/community/threads/bd-widget-framework.11324/

http://xenforo.com/community/threads/tenshi-latest-thread-sidebar.7533/