I'm not being hyperbolic when I say that ABC's 'Once Upon a Time' is unlike anything you've seen on television before. Its closest relative is probably a little-watched NBC miniseries called 'The 10th Kingdom' which aired in 2000, at least in the way it blends classic fairytales with the modern world to offer a whole new interpretation of pop culture's most familiar yarns.

'Once' also shares a certain amount of DNA with 'Lost,' since it was created by Edward Kitsis and Adam Horowitz, who wrote for the mystery series for the duration of its run (you can read Mo Ryan's recent interview with the duo here). But in its ideas, execution, and undeniable sense of whimsy, 'Once' is a unique creature, accessible to viewers from ages eight to 80.

Earlier this month, AOL TV visited the Vancouver set of the fantasy drama, wandering through the enchanting streets of fictional Storybrooke and talking with the cast about how the show is evolving so far. Join us after the jump for a hint of what you can expect when the show premieres on Sunday (8PM ET, ABC), and come back next week for a deeper look. Mild spoilers ahead.

January Jones has made a career out of playing some rather chilly characters -- Betty on 'Mad Men' and Emma Frost in 'X-Men: First Class' -- but does life imitate art? Well, maybe.

Jared Gilmore, who played the Emmy-nominated actress' son Bobby on 'Mad Men,' had some words of advice for the next young actor who takes his place.

"Be careful around January [Jones]," he told TV Guide Magazine. "She's not as approachable as the others. She's really serious about what she does. Everyone else is so nice."

Uh oh -- when a little boy is scared to talk to you, you might want to re-examine your public persona.