Nice to see there is an active community here. I've been experimenting with Nginx and I've started reading my copy of Clement Nedelcu's book on the subject. I work as a consultant for a software as a service company in the UK.
We've got plenty of Apache (Tomcat) here and even a production Nginx server in the cloud (but which I myself don't manage). We're presently looking at using the Upstream Blocks to provide balancing/failover for two existing Tomcat servers which can't (for contractual reasons) be migrated to Nginx.
I'll post my more detailed question pertaining to this in the relevant forum, but for now, hello everyone!