Is Student Motivation in a Science Classroom Possible?

With each year, I have to really think about how to grabbed student attention and increase motivation levels.  In elementary schools, you have bear or color systems that seem to keep the little ones in line and task completion possible.  Once you enter the world of middle school somehow motivation really changes.  You really can't get your students to enjoy science without finding reasons that make science relevant to them.  I find that as one way to help increase motivation in class, but once we increase motivation how do we sustain it all year long.  Maybe it's time for teachers to share ideas of what works in the science classroom.  So I am going to put down the books and the research articles for now and starting asking my fellow science teachers about what works.