Question: Is there any tool that draws a graphic visualization of a process' memory?

I'd like a graph showing the percentage of pages in physical memory and in the page file.

Answer: 
Check out [Perfmon](http://technet.microsoft.com/en-us/library/bb490957.aspx). It's a great performance monitoring tool that lets you graphically monitor nearly any aspect of a running program.
Using Process Explorer, right-click a process and use the "Properties..." menu. In the "Performance Graph" tab you can see the memory, io and cpu usage of an individual process.