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 .
.-'G REENCHE . ESEGR
/EEN CHEESEGREEN CHEESEG
./ o REENCHEESEG REENCHE
/ES o EGREENCHEES. EGREENC
/HEES . EGREENCo HEESEGREE
|NCHEE . SEGREENCHE
/ESEGR O `.-./ . EENCHEESE Full Moon +
| GREE --`-' o NCHEESE 5 1:31:19
|G REE ` o . NC . Last Quarter -
| HE E .-. SEG 2 10:05:23
\ . R EEN `-' . CHEE
| SE GREEN . CH
\ EESE G\RE / . O .
\ o EN \ \ / .
`\ . .\.-.___ .
\ `-'
`-. o / | o O
`-. / . .
`--. .
`---------
See also: bigcal, globe, xphoon.
ACME Labs / Software / phoon