I really like this kind of TV shows. Somehow it reminds me of 'Pippi Longstocking'. OK so this might be weird to you but the relationship between the grandpa and his grandson brings a harmony and a great feeling that Pippi had towards her dad and relatives.
This show brings lots of memories back to us adults and while watching few glimpses with the kids, I remembered my grandpa and grandma whom both have passed away. Also the show encourages strong relationships between grand parents and their grand children. Its great to see that kind of shows on TV. I'll say keep up with similar ideas and the society will be a better place.