AntiSFX

[sowhat-x]

This might come handy to dedicated *nix people...
"Simple tool to get rid of EXE-SFX module in self-extracting archives,
to make it extractable on systems other than windows..."
http://sourceforge.net/projects/antisfx

Note that bobby's "Ripper" is a way more advanced solution though,
if you can get it to build under FreePascal,or alternatively execute under Wine...
http://www.mc-antivirus-test.com/modules/PDdownloads/viewcat.php?list=R

As for...software junkies,yeap,AntiSFX also compiles under win32,
if you mess around a bit with mingw32 and the libintl/gettext libs...