Must-see TV shows are futuristic classics that shouldn't be missed. Of course, not every must-see is perfect. That's why we've rated them 1-5 on the patented "crunchy goodness" scale. Must-see by James Rocchi.

Title: Lost

Date: 2004-2007

Vitals: An airliner crashes on a remote Pacific island ... and things just get weirder and weirder for the survivors. Are they cast out from reality? Part of an experiment? God's playthings? Mixing Survivor, Thomas Pynchon, conspiracy theory and comic-book geekiness, it's still to be determined if Lost is going to be thrilling TV, or if it jumped the shark from the first episode.

Famous Names: J.J. Abrams (Creator), Matthew Fox, Evangeline Lilly, Dominic Monaghan (Cast).

Crunchy Goodness: 3

Elevator Pitch: "It's Survivor meets The X-Files! With really hot people!"

Life Lessons: Always check the passenger manifest.

Bang for Your Buck: The twisty, flashback-based narrative style — which gets thrown for a big loop in the Season 3 finale.

4815162342 — a guide to the digits that rule the Lost universe