I've just realised that one of the bands I used to work for, IQ, are having their 25th Anniversary concert at The Mean Fiddler on 9th December. The venue is on Charing Cross Road, a short walk from, and on the same day as, The London Perl Workshop.
Now do I go to the gig or to the London.pm beer session on the night?
It's days like this I wish that time travel was possible :)