Yes, I know there are four Memory windows, but I much prefer the display of a single value in the watch window, and I'm wondering if it's possible to specify a memory location to watch in the watch window.
Putting the address by itself just evaluates to the address in hex.
If you want to watch a particular memory location then you need to tell the debugger the type of the object that lives in that location. Instead of just 0x00aabbcc
use (SomeType*)0x00aabbcc
. Once the debugger knows the type of the memory location it will treat it just like a typed local and display values accordingly