A reference to one's own work as an attempt at
self-promotion.
Shameless plugs occur mainly on talk shows, but may also be seen at the end of performances. An actor, director or musician may attempt to promote another play, film or soundtrack that they worked on.
Also look for shameless plugs here in Everything. These are references by writeup authors to unrelated nodes that the author also created.
Example: Everything:TNG
Anode = more...