"You should tell your boss to stuff it."

This tends be be a career limiting move.

In my years of programming, I've been given maintenance problems in Fortran, PL/1 (and some of its subsets), COBOL, wacky special purpose languages for simulation, SQL, awk, C, C++, VB, various *ix shell-scripting languages, JCL, CLISTS, DCL, VBS, VBA, sed, InstallShield's scripting language, html, RAMIS II, and Speakeasy (this list may be incomplete). I haven't had any in Perl, because I'm the only Perl programmer at my current employer.

It's a learning experience; I really want to be indispensible, as in when I leave my employer frequently calls me with offers of large sums of money