Should I go for the teaching assistantship for Decision Support
Systems? If I accept the job, I'd be handling the lab sessions for the
course.

Is it something I'm excited about? I like teaching. The professor
seems to care about teaching as well, and he handles the tutorials
himself. That's good. I'll probably learn a lot from him. Does the
subject itself excite me? Browsing through the textbook turns up a
couple of interesting stuff that I'll be able to use in groupware
research and later on. It's a good opportunity to learn about
organizations' information needs.

Does it fit into my long-term plans? I'll learn about information
organization and visualization, which might be useful for executive
coaching later on.

Is it worth 6 hours a week or 78 hours of my life? I guess so.