Over on T-Nation, my favorite dead lift variation has gotten a really nice article:
The Trap Bar Deadlift
This article makes a case for the deadlift as a superior lift. I'm not ready to argue the trap bar deadlift is better than the regular deadlift. But it's definitely easier to coach, and cue, and for many people, to do. And it'll build leg and back strength.
I use the trap bar deadlift with my clients almost exclusively for those reasons (plus it doesn't require scraping a bar up the shins, which not so oddly bothers some lifters).
The article has a few good videos and text descriptions of the main lift and its variations, and if you're trap bar deadlifting please take a look at this one.