MIC MOUNT BARS (aka stereo bars, t-bars)
Some of the small active cable setups (Neumann, DPA, Schoeps) have their own mic mounting bars which I won't mention here.
AKG KM235 (http://www.akgusa.com
Probably the most popular mic mount bar out there, with good reason: it's durable, flexible, and inexpensive.
Shure A27M (http://www.shure.com
This sucker is sturdy. Well built, easy to use.
MacArthur Group Stereo Bar, aka Vark Bar (http://www.posthorn.com/Macvk_4.html
I see this one mentioned pretty regularly, but have never seen one actually using it.
Sabrasom ST2 (http://www.sabrasom.com.br
Never used one, but I've read plenty of comments that it's not very durable.