Typically for me, if I see something in a show that makes me tear up, and then revisit it I don't tear up again. I think that this is because part of what makes me tear up is the element of surprise that is lost when I revisit something.
However, there are two things that come to mind that made me tear up multiple times despite knowing that they were going to come.
Those two moments were Paul's Monolauge in A Chorus line as well as the final scene of Ghost.
"If you try to shag my husband while I am still alive, I will shove the art of motorcycle maintenance up your rancid little Cu**. That's a good dear"
Tom Stoppard's Rock N Roll