Steep.it is a great looking web-based timer for timing tea brew time — though it could easily be used for French press coffee or any other steeped drink.
Steep.it shows you how long different kinds of tea should steep for and has multiple ways for you to set a timer. From the main page you can type a variety of commands into the "Start Sleeping" box. You can enter the number of minutes, the number of seconds or the type of tea you're brewing into the box, and it will set the time accordingly. Using the URL steep.it/green, for example, is the same as entering in one minute (the suggested time for green tea).
Once you start the timer your browser pane becomes a count down clock against a slowly darkening background. The screen changes from tan to dark brown as the timer counts down. A ringer sounds and your browser flashes when the count down is complete. Steep.it is a free service and requires no registration. Have a favourite timer, web-based or otherwise, to share? Let's hear about it in the comments.