I've found that industries that need a quick turnaround often tend toward "scripting" languages (like perl) around other core languages and/or database backends. Jobs that I've interviewed for in the past (>1year ago) that used PERL include LAMP development(where P = Perl), testing, perl coupled with other-language development and QA.

It is better to talk to companies outside of job fairs. Sometimes job fairs are a great place to use the latest buzz word (as some at the fair can only hear/speak buzz words) and to declare to a prospective employer where your skills fit in to those buzz words. IMHO Perl isn't the buzz word it used to be; while lamer technologies, *coff* XML *coff* still happen to be useful/popular buzz-words.

rgiskard ponders: I'm curious how many follow up interviews I'd have in a job fair if I said the following to prospective booths: Java, .NET, XML, C#, MySQL, Oracle... probably a lot. I've noticed that these technology buzzwords have become more like powerful spells, mindlessly capturing peoples attention and planning for no good reason (@_@)