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Why is the task being done?
The user is searching entering text to search for a particular show/movie, is typing in enter his username (XBox), etc.
What does the user need to know or have before doing the task?
He needs to know how to get to the text entry field and how to insert/delete characters into it.
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What is the environment like?
XXXIf the user is alone, it is likely quiet and relaxed so it should be easy for him to focus. If the user is with others, it may be loud and distracting to the user.
How often is the task performed?
XXXText entry is relatively infrequent but quite an important part of these applications. If the user depends on search to find what he is looking for, the text entry field is on the application's critical path and significantly contributes to the user's overall satisfaction.
What are its time/resource constraints?
XXXText entry is limited by (1) the size of the screen on which text entry widgets can be displayed (2) the controls available on the remote/controller (3) the user's patience (it shouldn't take more than a few seconds to type a few words.
How is the task learned?
XXXThe user might discover how to enter text by exploring the interface (i.e. pressing buttons on the control and seeing what happens), or he might be guided by on screen instructions (a message: "use the arrow keys to move", etc.), or he might learn by watching others and/or receiving instruction.
What can go wrong?
XXXThe remote might not be pointed in the right direction, the batteries may die, the user may select the wrong letter.
Who else is involved in the task?
XXXOther people may tell the user what the type, but ultimately only one person is performing the text entry.