SPUG: PERL technical interview

[Islandman]

I have some job interviews coming up, one in PERL where I'm to do the "code
this on the fly on the whiteboard" exercise. I've worked in PERL quite a bit
over the years but during the last 2 years have had my mind warped by .NET
work and frankly feel awfully rusty for such an instant recall exercise. 

What would you recommend for a quick cram to try to be as ready as possible
for such an interview?

Thanks,
-Brian