Boxing and unboxing: when does it come up?

Question

So I understand what boxing and unboxing is. When\'s it come up in real-world code, or in what examples is it an issue? I can\'t imagine doing something like this example:

Answer 1

Boxing and unboxing is really moving from value type to reference type. So, think of it as moving from the stack to the heap and back again.

There certainly are cases where this is relevant. The inclusion of generics in the 2.0 framework cut a lot of common boxing cases out of practice.