Worth to watch

For me it was very good drama:
we have scenes that's make you laugh so much that your stomach ache,
well-recorded scenes and
good matched music.
The love/hate relationship between the Monkey King Son Oh-Gong (Lee Seung Gi) and Devil Ma Wang (Cha Seung Won) is so funny. Love this two acting.
And we can't forget the character of Zombie girl :). I give lower points for acting because of main female lead. It wasn't nothing bad but my personal feelings.
If you want someting light to laugh with good story, then this drama is for you.

the best drama

I love this drama because it isn't typical romcom. They also shown very important issues from life.
Acting of Lee Seung Gi as former prosecutor now the joblless building owner, gennius is superb, Lee Se Young character is "to much" as should be :), and suport actors are great: older ladys from Eunha club, barista and part-time employee of Law Cafe.
In the same time you can laugh, cry and be angry.
The music, OST from this drama is also very vell choosen. And we can't forget the great Eunha Band with Lee Seung Gi vocal.