I keep thinking I should try to learn another programming language. I taught myself Pascal, Shell and Perl a long time ago, and have been very happy with Perl in particular. At work I use ABAP (COBOL+SQL), and I keep trying and failing to learn Java.
Python is supposed to be a good language to learn as is Ruby, both have been influenced by Perl and in turn have influenced Perl 6. They can't be any worse than ABAP or Java...