At my job we are using Scrum developing projects. After each sprint-planning we fill the task board with stories and tasks. Recently, I noticed the team gets really focused on these tasks. As a side-effect tasks which are important to the project, but are not on the board because they were so obvious, receive less attention. This behaviour had some serious implications for the sprint goal.
To counter this behaviour, I have asked each team member to explicitly name their tasks for the sprint goal and put it on the board, even if the task was little or obvious. This seems to work.