You might not know the name but if you ever watched MASH you will know her face.
Kellye Nakahara is in more episodes than Trapper John or Henry Blake, often in the background, often with just one or two lines but she appeared in every series. If you count non speaking parts she was in more episodes than Radar. One of the first Asian women on TV who wasn't a caricature. Dead of cancer at 72.
Get it up ye.