The GRID: http://kelbytv.com/thegrid/
Joe McNally has an entertaining blog: http://www.joemcnally.com/blog/2008/03/10/da-grip/, and you can see a video of this topic: http://www.youtube.com/watch?v=EDsx3-FWfwk
Digital REV is more hardware but it is interesting (at least to me, having an attachment to HK): http://www.digitalrev.com/article/stuck-at-home-photos-idea/NjgxMDQxNjM_A
There are lots of videos you can explore by starting at the links above. Enjoy!