How do I move multiple vertices to the same point at the same time? As the picture illustrates, I've already starting moving vertices on the Torus to the exact same point (X:0, Y:-49.5, Z:1.5).  The highlighted vertices still need to be moved to that point.  The already moved vertices were moved one at a time (I selected the vertex and then typed in the new coordinates).  I'd love to be able to highlight them all and type in the coordinates and they all move to that point, but it doesn't work that way (It treats them like one object and moves the "center" of that object to the point, which results in interesting but undesired behavior).  Is there a way to accomplish this so I don't have to click and type over and over again, but can simply select all the vertices I want to move and then move them with one simple action?

I've been using Blender since yesterday so I'm new, and the training videos didn't reveal anything helpful.
The new method, ALTM, has already been mentioned. The other solution is to set the pivot point in the header to either active or cursor and then scale the selection to zero S0RETURN. Scaling or rotating around the active element is pretty cool since it makes the last selected, white vertex the center.

It's actually useful to know both ways because with scaling you can exclude an axis. Let's say you want to move them all to the XY position of some topology but leave Z unchanged. Then you can place the cursor on the target and use SSHIFT-Z0RETURN. There's just the additional step of W4 remove doubles.