I came across this earlier today.  One of the most ingenious ways to use the internet to make practice time more effective.

Gary Willis, who is a renowned bassist has a great flash website that will test the limits of your reading ability.

Check it out here.

Simply amazing.  It will give you a random line of pitches and suggested rhythms.  You can choose the frequency of sharps or flats and even use a predetermined range.

Make sure to pass this on to any of your students and friends!