I've just finished my third round of HST. I did a cutting cycle this time - after the holidays, my trousers were a little too tight around my waist for comfort.
I did a six-week cycle, starting with the 10s. For the negatives, I estimated my "zero-rep maximum" (i.e. just a little higher than I could lift even once) and did a standard progression of weights over two weeks. This turned out that the first week of "negatives" was the same weights as the 2nd week of fives, so I basically did the second week of fives again (three sets of five) and then a final week with heavier weights, using drop sets or negatives where necessary to do two sets of five.
Routine:
Slight-incline dumbbell bench press
Dumbbell bent-over rows
Dumbbell shoulder press
Assisted Chins   \
Assisted Dips     As a superset
Assisted Pull-ups  /
Crunches
Squats
Nutrition:
I aimed to eat 500kcal below maintenance, but didn't stress too much about it - if I was hungry, I'd eat something. However, I can definitely say that the weeks where I was strict about it were significantly more successful that the ones I was a bit laissez-faire about watching what I ate. I made sure to eat 1g/lb/day protein. Supplements-wise, I used protein powder (MetRx Protein Plus, which I was quite impressed with. I should have bought more when it was on special), creatine, flaxseed oil, multivitamins (which I'd use on a bulking cycle too) and then added CLA and ephedrine+caffeine.
Results:
<span style='font-family:Courier'>     7 Jan 17 Feb Diff.
Weight lb 184  178   -6  
BF %    20.7  16   -4.7  <-- !!
LMM lb   146  149.5  +3.5
BFM lb   38   28.5  -9.5  <-- !!
Waist "   33   31.1  -1.9
Navel "   36.5  34   -2.5  <-- !!
Hips "   37.4  36.1  -1.3
Neck "   14.5  14.75 +0.25
Chest "   40   40.5  +0.5
Nipple "  37.7  38   +0.3
Bicep "   12.6  12.9  +0.3
Forearm "  11.5  11.7  +0.2
Thigh "   23.7  24   +0.3
Calf "   15.3  15.5  +0.2</span>
I'm quite pleased with the results. I hadn't planned to gain any muscle-mass, so that was a total bonus. 
Next:
The same again, except I'll be replacing the dumbbell rows with barbell rows... because I ran out of dumbbells heavy enough. Woohoo! I'll also be throwing deadlifts in there.
Chris.