It's awesome. I'm an accountant though, so I'm an excel junky...even use it for grocery lists.
I really like the graphs. I can just black out the cells I want, and tell it to graph the data. Nice to see your progress right there in front of you in a single picture. It's like the stock market...from day to day it's hard to follow, but I like being able to pull up a graph, set the date terms, and see the big picture.