The Great Show is funny, heartbreaking and heartwarming and all these moments are shown at the perfect time in an impressively structured storyline. Son Byung Ho's and Kang Sung Jin'sawful acting can be easily overlooked as they, fortunately, do not have much screen time. The recurring BG music was always played at the perfect moment to enhance the mood of the scene. Maybe 16 episodes was a tad too long for the content but it wasn't as bad as other dramas where there are too many filler episodes just to make up the 16.
The main plot and subplots focus mainly on resolving the problems rather than the problem itself. I find that plenty of kdramas spend too much time focusing on the problem which renders the whole show extremely negative and frustrating to watch and TGS does well to keep it on the positive side.
If you are looking for a feel-good family drama, then I highly recommend this. It's a typical fairy tale story, but a very good story nonetheless.