When the 4.0.1 patch hit, I was dismayed to learn that my Mage blink didn't get through as many of the invisible walls as it used to. They took away the auto-unstuck option as well, so as a solo-explorer, it slowed me down a bit getting to those hard to reach places...
...until I discovered that the Fishing Chair works in a lot of those same spots. Gets me into Darnassus Bank, Un-instanced Sunwell, some of these newer spots we've been seeing like Searing Gorge obstacle course and Durotar Aquarium, etc... Really anywhere that you could do with a friend doing a polymorph, fear, chopper, etc... but as mentioned, I do love my solo explorations.
I made a video... check it out here: http://www.youtube.com/user/watch?v=07LuNaGhE0M
Looking for more stuff every day.
~ The Wizard Trokair
<Walks Through Walls>