U know what /r/netflix? I have a question for you....

Sometimes I watch a movie, tv series, etc. and, for a variety of reasons, would rather it NOT affect what comes up in my suggested titles. Is there a way I can delete my previously watched titles? Or at least, as I said previously, not have them affect what is suggested for me? And, if there isn't, can there be...?

Get back to me on this please. Thanks in advance.