I bought one, loved it, bought another; Update: got one for baby, too!
I bought the first one for my wife-to-be because she said she was having trouble sleeping and the fan helped.  Bingo!  This simple device is in constant use and I, too, like the effect.<br /><br />My mother has had trouble sleeping for years.  She would use the TV to put her to sleep (which I could never understand).  She was up at all hours and she never got a good night's sleep.  So I bought the second one and had it shipped to her.  Bingo!  She's now sleeping better than ever.  In fact, she recently told me that she forgot to turn it on the other night and still slept well.  (I have to believe that's because she is sleeping regularly now.)<br /><br />If you have trouble sleeping for whatever reason, this seems to do the trick.  $40 is a small price to pay for a consistent and good night's sleep.<br /><br />Hint: since the device should be across the room, I also got an extension cord that has a switch that extends off of it (it's like a T configuration) so my wife can turn it on and off from the bedside.<br /><br />Update: we just had our first baby four months ago.  I immediately got another one for the baby's room.  Seems to help her fall and stay asleep.  (She's been a good sleeper from the beginning, though, so I can't say it is some miracle cure for babies that don't sleep well.)
Rating: 5 stars