Star Trek: The Next Generation: The Bonding
Some kid's mom dies, giving Wes the opportunity to confront his issues with Picard. Also, the aliens whose fault it is decide they want to replace the kid's mom, and they spend the whole ep dealing with grief in the 24th century. Actually, an interesting discussion, because Gene Roddenberry said you don't grieve. Personally, speaking as someone who has done my share of grieving, I hope humans never stop.