When I am commisioned for interior work, I like to try and incorprate a pan into the shot list, or if something jumps out at me i shoot it!  Like when i photographed the interior of a new music studio in New York BEAT 360 I managed to shoot this:

To get technical - i shoot various fames on a tripod, overlapping about 1/3 of each images with the previous.  this allows greater flexibitly with the stiching together at post production.  I also bracket each exposure 1 stop either side so I have the avaialbilty to composite elements into the final image.  For example the outside of the windows was shot at a darker exposure and then introduced to the final.

POST PRODUCTION: I retouch most of my own work, to give me lots of creative control - using the obligitary Adobe Photoshop CS4  I use the the command File> Automate> Photomerge to merge the exported .psd files together.  This gives a really great effect.