Lookie lookie!  A fabulous feature of Ulduar.  It let's you teleport to boss locations when you run back from a wipe.  Kind of like the teleport feature seen in Kara.  It's always nice when there's a reduced run back between attempts.  This means less run time and more attempt time!  Long run backs not only time consuming but tireing as well.  Nobody likes to run through long winding paths back to the boss.  Neat looking graphic too.  I definitely think it looks a lot more teleport-ish than the regular major city portals. 

I think the people who will love this feature the most are the heal/res/buffers.  Since it makes the runback short and easy, it encourages people to run back after a wipe.  Since people gain more hp/mana while they run back, and the healers don't have to use their mana to res and will have some time to breathe.