Well, yes, I know that ounce for ounce, espresso has less caffeine than drip coffee.  The pressure and heat degrade a signifiant amount of it.  However, Leeanne enjoys an espresso before knocking off for the night.  It keeps me awake for 3 more hours though.  I finally decided to wuss up and get some decaf for myself, which has been doing exactly what I wanted it to.  I concede that it's not exactly on the official list of natural sleep aids, but at least it doesn't keep me awake extra time.  Unless, of course, Leeanne switches my decaf for regular.  Holy crap, it was 3 a.m. and I couldn't sleep at ALL.  I did manage to select the right subwoofer for the new box I'm gonna build.  Pics when I'm finished, and my goal is to build it and sell it for less than $300 with some pocket change for me to spare.