My favorite JAVA site

This is the tracking program for determining the placement of all the satellites in orbit. This is a little processor intensive so be warned, it takes a processor above 300mhz to run any good. Warning: This program is computationally intensive.  The faster your computer, the more usable it is. 
Run preferably on PC's faster than 166 MHz with Java JIT (Just-in-time) compiling enabled.