To Watch Tonight ...

What to watch while trying to figure out the difference between an epidemic and a pandemic ... • NLCS, Game 6: Astros at Cardinals. "Mulder! I need your help!" So many times Gillian Anderson said that on "The X-Files," now everyone in St. Louis knows what it really means. Houston, meanwhile, is chilling the champagne. [ Fox] • UEFA Champions League: Real Madrid CF vs. Rosenborg Bk. It's official: We have Roberto Carlos Fever. Nothing to do now but let it run its course. [ ESPN2] • NHL: Islanders at Rangers. It's the battle of the backup goalies, and one of them is named Snow. How perfect is that? [ Fox Sports New York]