I've had it a few times. In London over sugar, at home over sugar. Right after it came out a friend bought a bottle. At a party I spent the better part of the night trying to come up with a drink that anyone thought was actually good. I never found one. I did have a very good time though.
Then, I went to a local restaurant that serves it by rinsing the glass with it before adding the drink. I had a mojito in a glass rinsed (swirled) with absinthe.
That was quite good. I'll never buy it though, not to my taste and very expensive. $80 for 750 ml.
I, of course, didn't have the wormwood kind.
People will forget what you said, they will forget what you did, but they will never forget how you made them feel.