Definitely not another Y2K, but it still was interesting.  Here is what I noticed:

• All my computers had no problems
• The usual VCR clocks had to still be manually changed.
• Our cable box from Time Warner did not change at 1:00 AM.  I was up and saw it say 1:35 AM (which never existed).  It was fine by the morning.
• Our Honda Odyssey which has a built in navigation always updates by itself.  It set the right time based upon where you are.  However, it didn't understand today's change.  It was still an hour behind.  The clock is not settable.  However, you can offset it by +/- hours.  I imagine I will have to do this again in a few weeks.

One personal note, both of my children were born on DLS weekends (both spring and fall).  In fact, if my son was born 5 minutes later, they would have had to indicate which 1:00 AM he was actually born on.  This was because there were 2 "1 AM" times that night (the fall).  It was a little confusing because the nurses were updating all of the clocks beginning at midnight.