Sure, but please only make one post per question
That way our boards do not get too cluttered.
Ok, the effect that you are talking about it done by tracking 3d data to a 2D camera on a compositing application like After Effects or Shake.
It is the same effect used in the opening title sequence for "Panic Room".
As the camera moves and pans arounc the city, text is tracked to the parts of the scene to make it look as if the text was shot there.
...panic room may be a bad example, as most of those shots where partly all 3d anyway, but my point is that the effect is called "Motion Tracking".
There is a module in Maya called "LIVE" that allows you to do this.
Also, there are many tutorials regarding tracking in compositing, as well as 3d.
The right folks to ask this type of question in the 2d world, would be Paul at www.VFXTalk.com
For the 3d world, we would use LIVE, BAYOJU (sp?), AFTER EFFECTS, by exporting our Maya camera data directly to these applications, allowing pixel-perfect composites, and tracks
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS