If you use Krugman's AP Economics you might want to find some clips of him to show your students.  Above he debates morning talk show host Joe Scarborough on the Charlie Rose show.  They discuss paying down debt, depressed economy, baby boomer retirements, carrying government surpluses, deficits, interest rates and more.  It might be an interesting exercise to watch part of it and try to graph some of what they are discussing and much more.