I am still amazed at the number of people in the US without a DVR, but the latest numbers from Leightman Research Group (via Telecompetitor) show that adoption has jumped to 40% of American households. That number’s up significantly from the fall of 2008 when data showed DVR penetration at only about 25%. And, 34% of today’s DVR users have more than one DVR in the house, though there is no word on how many of those multi-DVR homes have their set-tops networked together. Meanwhile, VOD continues to outpace the spread of DVRs. The Leightman research found that 52% of digital cable subscribers had used VOD in the past month.