auto, the new range for and lambdas are my most used C++11 features. Also make_shared/make_unique.

  auto ptr = make_shared<T>() 

Reads very nicely so I agree that if the type should be somewhere in the auto expression. That is, use auto to remove redundancy. I just wish they would have extended type deduction to lambda arguments so I could do:

  [](a,b){ ... }

Instead of:

  [](int a, int b) {...}

My understanding is that they're allowing:

  [](auto a, auto b) {...}

Bleh.