Here are some cool student projects from various years I have been at Gunn. They all run nicely on the PC; the Mac OS may not be so friendly. Students have done far more than what is seen here, but I thought these would be interesting examples.
2003: Tony Wang's JavaSort (very helpful over the years for students who studied the AP CS AB curriculum)
2006: Dan Federman's Capture the Flag (Does this look like the Marine Biology Case Study? It is! Press "p" to watch the purple and green teams try to take each other's flags)
2008: Atsu Kobashi and Andrew Liu's Geometric Transformations Applet
2010: Harrison Ho's Hivolts variant, Hitemps
2010: Colin Peter's Metaballs