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 @
/@@@@ .
|@@@@@
/@@@@@ O Last Quarter +
| @@@@ 3 0:16:22
|@ @@@ New Moon -
| @@ 4 16:31:14
\ . @
| @@
\ @@@@
\ o @@
`\ .
\
`-. o
`-.
`--.
`---
See also: bigcal, globe, xphoon.
ACME Labs / Software / phoon