As for scientific stuff, I can bring the xplot package. This beast is
able to plot great 3D surfaces (not much worse than Maple :)
abel
-- /v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^v^\
Alexander L. Belikoff |o ... o|
(abel@wisdom.weizmann.ac.il) |o 3314 signal(SIG_CTHULHU, fhtagn); o|
|o 3315 pause(); o|
Berger Financial Research, Ltd. |o ... o|