Service Management can serve various kinds of organizations -
everything from Financial, Healthcare, Nuclear to Public and beyond. Given Service Management has such versatile capability, what are best practices for each industry?

It's not industry specific at all. You need to define the IT services that you want to provide, and then you need to put governance around those services, with monitoring in place to allow you to evaluate your performance. The best route we've found is to really work on ONE service at a time to allow the company to get comfortable with the process. You can then evangelize the new capabilities around the request, provisioning and measurement of the new process, which will allow you to gain more acceptance for the changes you'll need to make around the next individual process that you tackle.

There are definitely some common services in each industry, but the management of those services is not industry specific.

Frank Tate
www.gulfsoft.com

I agree with Frank, there is no best practices specific by industry. I think IT Service Management is general, the focus is manage the service, no matter what industry services. The key is how interacts the processes and the tools. More relevant if the industry is IT dependent. 

This ITSM reference architecture help a lot to talk with the customer and start a deep conversation:

Service management reference architecture