Do you use the minor products in Office?

Office is a huge suite of products, but we tend to focus on the most popular pieces: Word, Excel, and Access. The remaining products might not be as popular, but they’re still useful: FrontPage; InfoPath; OneNote; PowerPoint; Project; Publisher; Visio

I admit to using the three biggies a lot, but I seldom use the others. What minor Office products do you use regularly?