Well..... You can't have too many nice videos to watch, can you?
This one isn't just about Symi. It's one of a series of videos about Greece shown on Aegean Airways flights. Symi is in there at about 5 minutes from the start but it's worth watching the whole thing.
In fact it's worth watching all ten of the "Enter Greece" videos if you have time.
The playlist is at https://www.youtube.com/playlist?list=PLYAGPqZRqmcilbhr8wHkYt5Oia1a5Seuu