Aurgh!  The scene where Sally Field has the machines shut off, Nanadee!!  The whole hospital part.  Rips my innards out!  Terms of Endearment has always been a painful movie to me.  And, I also weep profusely every time I see Brian's Song. 

The Will Smith movie you mentioned was The Pursuit of Happyness.  That was a good one too.   Then again, I cry watching PETA commercials and old episodes of Little House on the Prairie!!