Absinthe In Omaha
I second the reccomendation for Spirit World. In addition, Costco had an Absinthe at Christmas that wasn't Lucid (can't remember the brand). Not sure if it was seasonal...I haven't looked since. Also, if all else fails there is a little tiny liquor store/c-store on the corner of 20th-ish and Leavenworth. Don't mind the bars on the windows--the really sweet lady running it will order anything you want. She was ordering us Pisco long before you could find it anywhere else.