It appears that I'm expected to be excited about either one particular programming language, or hard computing problems.
At this point in my career, it seems naive to be excited about a programming language. In my experience, the programming language has mattered far far less than other factors in the success of a company. What are sales people expected to be excited about? I hope it's not Excel... I am equally suspicious of those excited by hard computing problems. Debugging memory leaks is a hard problem. Deducing the cause of periodic load spikes on ec2 instances in the middle of the night is a hard problem. I must admit, however, that these tasks does not excite me.
The potential to succeed excites me. Seeing a product I've worked on loved by the public is exciting and satisfying.
It just seems like the OP thinks that his candidates should find the making of sausage enjoyable and pleasant.