I was talking last night to two friends who are both programmers. I asked what they were working on (C++, VB), and I said I was doing a lot of Perl. One mentioned that he also did apps in Perl. He never remembered the language, but after 30 minutes he'd again be coding like a demon. Then two months would pass, and the cycle would repeat.
The other simply smiled and said "Perl is the glue that holds the Web together". He does a lot of programming in Perl, but doesn't think of himself as a Perl programmer any more than he would mention in an interview that he speaks English.