THE X-FILES DARKNESS FALLS
This is probably my favorite X-Files episode (First Season #20) when it really looks like Mulder and Sculder are doomed with no one out in Darkness Falls. The nice trip to the forest that Mulder promises Sculder turns into Scully's worst nightmare of blood-sucking crawling things...
Clip: "Mulder! Get them off me..."
FULL EPISODE Click Link: THE X-FILES DARKNESS FALLS