In this X-Files episode from the new/limited-run 10th season, while Mulder and Scully investigate the "Trash-Man", some sort of entity that resides in trash part of the dumpster-trucks and tears people literally in half (we see the limbs), Scully's mother has a heart attack and is near death. This brings a lot of memories for Scully - when she was found and in a coma in season 2, and then later on gave up her baby for adoption (the mother mentions the child's name when she wakes up) - and it provides for Gillian Anderson the episode to do the most sorrowful acting in this season.
One may remember the mother character from past seasons (like the episode when Scully is found and is by her bedside, and to the show's credit they use the same actress). The main story with this trash-monster, who seems controlled, sort of, by the illustrations of a graffiti artist (?) is fine, though mostly as a sort of classic monster-of-the-week story. What makes it more interesting is what Scully brings to it, especially once she returns to the case to distract herself from what's happened to her mother. It's an episode with a strong story, but it's made potent by the emotional context and how much weight and gravity is there with the idea that... ideas themselves can create or destroy things (a scene with Scully and Mulder listening to this illustrator explaining this, and what Scully flashes to, highlights this best). I don't know if it's the "best" of the new episodes of the six, but it did bring the biggest wallop as far as the pathos.