I finished the game a few days ago. It took about six hours without a guide, which isn't bad. The humor wasn't quite on the level of Monkey Island, but it had some pretty good lines. The music worked well and the voice acting was pretty good. There were a few lines that sounded like someone else read the part.
I'd say it's certainly worth a try. The puzzles were straightforward and logical - at least for someone that has played adventure games previously.