Hi Young,
With reference to SAP I work on Security and GRC, a bit of CRM, BI, Integration, and I have a good circle of friends who are working in different modules and I keep interacting with them to learn different things related to other modules as my interest spans multiple modules. It is very interesting and fascinating how SAP enables so many different services to business. I have been a fan of ERP ever since I heard the term and I got to understand it. I am into IT and various other areas of security and applications, and management also.
Cheers,
Nagarajan Viswanathan