Gameboy needed to make a quick line graph in one of his math (Horizons) assignments. Instead of doing a hand drawn one, in my typical wannabe techie mindset I thought, "Let's see what's online." I googled line graphs and found this fabulously fun site from the National Center for Education Statistics. (I hope using fabulously fun & NCES in the same sentence is not redundant.) We made the line graph, then converted it to a few other kinds of graphs. Quite fun.
Next time you need a quick graph or a are just needing some crazy math fun, remember the NCES "Create a Graph" site.