For those of you who've been awaiting this, BizTalk Server 2006 has now RTMed, and is available on MSDN subscriber downloads. Want to know what's new in BizTalk 2006? Check out http://www.microsoft.com/biztalk/evaluation/overview/default.mspx. If your applications need integratin', and your business needs processin', BizTalk 2006 is something you may want to look at.
And hey, any technology that has a feature called BAM! (exclamation point mine) and spawned the term "functoid palette," definitely has some coolness factor going for it.