According to RW this month the hill training is SUPPOSED to be really intense ten second bursts of hard work. Apparently it developed speed, stamina and a higher lactate threshold(it says here).
Anyway, after my fantastic weekends results (first 5k on mill, first 10k on the real ground, well, okay, 5 1/2 miles) I took yesterday off and then hit the hill work today. I did seven or eight really hard ten second hill bursts, hard enough to almost have me on my knees, followed by a quick 1 1/2 mile run. I have to say condsidering it was a short run I came back absolutely shattered. Mind you, and to my great surprise, even with the hill bursts I managed to cover the course in less time than I have ever achieved before..
Most of my training runs include some fairly agressive hills so I would say I agree that hill work is probably good for a marathon training scheme. It seems to be so for me anyway.
David