Hi Mark - please don't shout! :-)
This is pretty common - I've only had one with a callsign - "PARRY21" out of 40 individual K35R's in MyLog.
Quie a few bizjets have ADS-B these days, some even with proper callsigns, routes etc. There are even some Cessna singles etc which show their position on the map.
It's all getting better as the equipment (their transmitters, our RadarBoxes), gets more common!
Rod