macondo@foo:~$ sudo ps_mem.py
Private  +   Shared  =  RAM used   Program

88.0 KiB +  28.5 KiB = 116.5 KiB   getty
136.0 KiB +  26.5 KiB = 162.5 KiB   gpm
152.0 KiB +  44.0 KiB = 196.0 KiB   init
136.0 KiB +  68.5 KiB = 204.5 KiB   hald-addon-acpi
156.0 KiB +  72.5 KiB = 228.5 KiB   xinit
184.0 KiB +  54.5 KiB = 238.5 KiB   cron
148.0 KiB +  98.5 KiB = 246.5 KiB   hald-addon-input
244.0 KiB +  15.0 KiB = 259.0 KiB   dhclient3
164.0 KiB +  96.0 KiB = 260.0 KiB   hald-runner
212.0 KiB + 132.5 KiB = 344.5 KiB   unclutter
372.0 KiB +  36.0 KiB = 408.0 KiB   udevd
256.0 KiB + 211.0 KiB = 467.0 KiB   hald-addon-storage (2)
432.0 KiB +  76.0 KiB = 508.0 KiB   preload
472.0 KiB +  43.0 KiB = 515.0 KiB   dbus-daemon
460.0 KiB +  92.0 KiB = 552.0 KiB   login
420.0 KiB + 150.5 KiB = 570.5 KiB   sh
380.0 KiB + 213.0 KiB = 593.0 KiB   scrotwm
444.0 KiB + 168.5 KiB = 612.5 KiB   startx
780.0 KiB +  83.0 KiB = 863.0 KiB   rsyslogd
524.0 KiB + 419.5 KiB = 943.5 KiB   gconfd-2
  1.3 MiB + 516.5 KiB =   1.8 MiB   bash (2)
  1.8 MiB + 227.0 KiB =   2.0 MiB   hald
  3.8 MiB + 667.0 KiB =   4.4 MiB   urxvt
  9.2 MiB + 678.0 KiB =   9.9 MiB   Xorg
91.2 MiB +   2.1 MiB =  93.2 MiB   firefox-bin
---------------------------------
                        119.5 MiB
=================================

Private  +   Shared  =  RAM used   Program