Google will turn up some example disaster recovery plans but you'll need to perform a risk assessment to get a good idea of what suits you. Risk the the product of probability (how likely an event will occur) and hazard (the potential impact of the event), so it makes sense to plan for the highest risk events. The highest risk may come from hardware failure on a critical system for example because the hazard is high and the probability isn't that small when you consider the potential for human error.

Test your plan. Backup is all about restoring your data, not the warm fuzzy feeling that you're safe so test your backups and verify your media. Do a dry run of replacing that critical server. All companies need to have a fire safety policy and fire drills test this and train staff, it might help to think of it like this.

Jimbob

I am aware that one will probably not be allowed to offer the companies resources, but some specifics would be nice and interesting.

Lately I got in contact with a few companies and while talking I discovered that most of them have not such plans available. Some had only thought about some things which has to be done when something happens but never wrote it down. I tried to explain to some of them how essential this could be (just think about something happens when the responsible guy who thought about solutions is not present for some reason) but I guess it won't help anything as often people don't see this as something important. This remdinds me of backups - as long as nothing happens its fine, but as soon as people are glad to have such things.

I also second what jimbob says, that such plans have to be tested when they are finished as often something sounds great in theory but maybe not in practice.

For BCP, check out www.businesscontinuitycentres.net/ as well as the commercial services offered, there are also some free resources that can aid with the basics and get a feel for what is required.