Aliasing a class? Whoa!

I accidentally discovered a feature in C# that I thought only possible with C/C++ – aliasing a class. I’ve been coding .NET for years but never have I encountered examples or extensive discussion on this. I will not be a fan of this because I’m sure this also have the same problems inherent to the C/C++ equivalent. One justification for using this may be for shortening of a class name, but again we don’t have to type who needs to type the entire class name? Don't we have Intellisense to help us with that. Besides, if class has very unwieldy long name, it wouldn’t hurt to contract some words or better, redesign it because it may not be cohesive all along.