I love this video:
This was yesterday's landing, from the THAICOM 8 satellite launch, which went to GTO. This is now 3 successful landings on the droneship in a row. I recall after the first landing, the commentary was "maybe it was just a fluke and they got lucky." I think after 4 successful landings, 3 in a row, it's safe to say it's not just a fluke.
Next milestone must be relaunch of a used rocket. Then maybe relanding of a relaunched rocket.