To add a historical term that doesn't get used much anymore, how about 'killer app'. Back in the early days of computing, that meant an application that would cause people to purchase a computer for no other reason than to run the app. When spreadsheets were invented, it caused accountants to by Apple 2 computers. I bought my first Atari in 1985 for the word processor.
It's not quite dead yet (to spin off of Monty Python). My mother bought a computer and uses it for only two reasons: email and solitaire.
I raise this because it may be helpful for us to continually ask the question, "why do people use computers, really?" Most people have a very limited group of applications that make them own a computer. Identifying these functions can be very helpful in determining hardware requirements. Maybe we could come up with a name for these apps as a group? Maybe app-pack?
“Politicians are like diapers. They both need changing regularly and for the same reason.”