ANC-SEA-SFO-SEA-ANC First Class. Outbound uneventful and reasonably good service in First. Back was another story. Surly male flight attendant who was uninterested in serving in First Class. No service for the first 90 minutes of the flight. Service when it appeared was lackadaisical at best. No refills of drinks. Flight crew sat in jumpseats ignoring passengers (including me) who were trying to use restroom. Restroom appeared occupied for long period of time. Turned out the flight crew just couldn't be bothered to turn off the "locked" sign for about two hours of a three hour and 20 minute flight. I am looking forward to competition in the Alaska market arriving this summer.