Cdred is a Linux driver and two programs that enables *any* CD player software (xfreecd, gtcd, etc) to use audio cdroms inserted in another computer. In other words: you can listen an audio cd in a Linux box that doesn't have that cd inserted. Cdred works on all 2.2.x kernels, support for 2.4 will be implemented soon.
Circus Linux! is a clone of the Atari 2600 game "Circus Atari." The object is to move a teeter-totter back and forth across the screen to bounce clowns up into the air. When they reach the top, they pop rows of balloons and then fall back down. If you don't catch one, you lose a clown.
AA-lib is a low level gfx library just as many other libraries are. The main difference is that AA-lib does not require graphics device. In fact, there is no graphical output possible. AA-lib replaces those old-fashioned output methods with a powerful ASCII art renderer. The API is designed to be similar to other graphics libraries.