What are some practical problems which require the use of Kadane's algorithm? I've worked through Kadane's and love its elegance. I am worried though, unless asked specifically about arrays and it's obvious that's what's for dinner, I won't know to use it.

What are some real-life problems and applications where this algorithm is key? How would one go about recognizing them in the wild?
See the Wikipedia article on the maximum subarray problem for applications to genomic sequence analysis, computer vision, and data mining.