I’ve been busy with all sorts of things lately. I’ve been having fun with Smalltalk, Squeak in particular. It is really cool, IMHO. Squeak by example is a free online book that’s a great place to get started.
A lot of LDAP and security work has led me into the gory details of ASN.1, which is the underlying encoding standard for X.509 certificates among other things. It’s yet another variation of LISP S-expressions, as is XML, and most structured data schemes in widespread use. Lists and atoms, that’s all you really need.