My favorite feature in the touchpad is Just Type, which allows the user to create content first, then worry about what application to open it with. for example, I can start typing a status update and then choose whether to send it to Facebook or Spam, create an email, etc.
Ironically, my least favorite feature is the touch keyboard. I am experiencing a lot of misspellings due to the neighboring key being accidentally pressed. It feels like an adjustment to a sensitivity level is needed. There are some pluses to the keyboard, like adjusting the size and the number row, though.