boooo freakin hoo, im as strong as i ever been my waist has a 38in. girth, all muscle. I have a big muscular ass, and I have 2 muscle bound pythons running between my spine. Deads are the shit. Good for your lungs also.
better stabilization on squats
lotsa spill over to things like bench press or barbell curls
the same can be said for squats, but I wouldn't be able to squat as much as I can without the deadlift. I'd imagine it would help with my cleans too.