I'm quite sure that it is not possible to add PostScript, because there is no way to find a common starting for C, C++, Perl, plain TeX and PostScript.
I took that as a challenge :D
%:/*:if 0;false +s&&(#*/include<stdio.h>/*
{ Just another \TeX\ hacker,
{ \bye
} &g;print substr q q
Just another Perl hacker,
q, 1 and exit; q q
%};};);echo -ne "\e[A\e[K\
Just another bash hacker,
" && exit; */
int main() { printf("\
Just another C%s hacker,\n\
", "++"+2*(1%sizeof'2')); } /* }
/Times-Roman findfont 20 scalefont setfont newpath 72 72 moveto
(Just another PostScript hacker,)
show showpage % q # */