Duck Tape is a wonderful invention, and not designed to be removed. I have found the best way to deal with the situation of removing Duck Tape, usually when it is old, worn, and dirty is to simply apply another layer of duct tape. This effectively removes the unsightly mess.

Huh? they want to what? Well, why didn't they say so?

Ahem, remember that adage about the tool box? All you need is Duck Tape, WD-40, and a hammer? WD-40 actually is a pretty good way to remove the adhesive from Duck Tape. (If it is supposed to move, use WD-40. Remember? D'oh) Rubbing alcohol is also effective. There is also a special adhesive remover available from the makers of Duck Tape that works very good on everything I ever tried it on, and is safe for most surfaces, including cloth, though I would test it first to be sure before using it on something I cared about.

As for using it in a scene, I would recommend 3M's Performance Plus Duct Tape. It actually leaves almost no adhesive on any surface, including skin, and if it does the adhesive easily comes off with a citrus based cleaner.

I find that Duct Tape is actually excellent for use as an impromptu bondage device, though, as Wolfscout said, there is a danger of an allergic reaction. Play safe and test first.

Have fun.