Memory Spy?

While I''m debugging an app, sometimes I need to look at what is at a certain place in memory. While Visual C is ok at this, it draws the data as a string, which means a \0 will cut it off. This is no good for binary data. What I need, basically, is something I can give a specific memory address and length and it will give me text or binary output for what is actually there, and preferably also allow me to do stuff like copy to clipboard and such. Anyone know of any such app?