Rectangle.ReallyContains()

So I just wrote an extension method, Rectangle.ReallyContains(Point p).
Seems the XNA folks and I disagree on what Contains() really means. For example, let's say a rectangle has a left value of 0, a top value of 0, a right value of 5, and a bottom value of 5.
To me, the corners of this rectangle are as follows: (0,0), (0,5), (5,5), (5,0).
So then, rectangle.Contains(new Point(0,5)) should be true.
According to the XNA folks, this is not correct. From what I can tell, the bottom and right values are the numbers directly after the rectangle ends (so the rectangle goes from 0 to - but not including - 5).
I'm sure their way makes sense in a lot of scenarios. It doesn't make sense for mine, and I just spent a good 10 minutes figuring that out.
*rant finished*

Nate's Roguelike Game

So I recently rediscovered ADOM (http://www.adom.de/) and after playing it for a while (and dying many times) I've decided to create my own roguelike game.
The game is located here: http://natesroguelikegame.codeplex.com/.
There are no releases as yet - so far, the only thing working is random room generation.