Improve your typing speed

Like most people who uses computers every day I can type with both hands without looking at the keyboard.
This I learnt from a DOS typing program. Today someone showed me a free fun typing program in flash on the internet called TypeRacer.

You type a paragraph and it shows you the number of words per second. However the best part is you can compete against multiple friends (or random people) at the same time and the typing progress of each player is shown as a car race.

Some good fun.