Sketch that allows the user to send commands to controll a stream of servo motors, you can set how much servos you're dealing with and their positions with serial commands (parallel movements are possible and easy now)

Sketch that uses the serial port communication to send commands and control multiple servo motors attached to the board (which you can also set the ammount via the serial port communication); Allowing the user interact with a robot, or a similar project, whithout touching any Arduino code at all