Phoon displays the phase of the moon, either currently or at a specified date / time. Unlike other such programs, which just tell you how long since first quarter or something like that, phoon shows you the phase with a cute little picture. You can vary the size of the picture with the -l flag, but only some sizes have pictures defined - other sizes use @'s.
Sample output (HTMLized via texttohtml):
---. `--. . `-. `-. . \ . \. O \ @@@ \ @ o @@@@| @ @@ \ New Moon + @@@@ | 4 16:59:36 @@@@@@@ | First Quarter - @@@@@@@ | 3 11:28:18 @@@@ o / . | o . / . / .-. /' `-' / . .-' .-' .--' ---'
See also: bigcal, globe, xphoon.
ACME Labs / Software / phoon