“Scrubs” (8 p.m., ABC): J.D. (Zach Braff) considers moving to be near his son.

“Scrubs” (8 p.m., ABC): J.D. (Zach Braff) considers moving to be near his son.

“Lost” (9 p.m., ABC): Tonight is the 100th episode of “Lost.” Hmm, 100 episodes into this thing and our brain is still cramping up. Is there any relief in sight?