1 Labyrinthine series like Lost require a second viewing to digest all the plot twists. Rewatching early episodes, I've reveled in spotting the cursed numbers (Matthew Fox's Jack, left, sat in row 23) and picking up tantalizing hints about possible future story lines (Rose insists the missing passengers from the plane's back end are alive).
2 After neglecting to watch UPN's quirky Veronica Mars during its initial run, I've become enchanted by its wry writing and the deft starring turn from Kristen Bell as a teenage private investigator. (Harry Hamlin, turning on the smarm as a classmate's creepy dad, is also a hoot.)
3 Many repeats are accompanied by ads for upcoming fall shows. I've seen two clever promos that already have me counting down to their premieres. I couldn't stop chuckling at UPN's Everybody Hates Chris ad, about a teenage Chris Rock, while FOX's Prison Break, with two incarcerated brothers plotting their escape, left me whiteknuckling the remote.