Gigi Edgley and the rest of Sci-Fi's `Farscape' crew begin 4th season.(Knight Ridder Newspapers)

A conversation with Gigi Edgley is like trying to juggle bits of kinetic energy that change size and shape in the middle of your act. It's all you can do just to hold on.

Edgley is calling from New York, the last stop on a globe-hop that took her from Australia, where her hot-hot-hot Sci-Fi Channel show "Farscape" is shot, to Italy to vacation with her sisters. She is young (just 24) and breathless (understandable), with a distinctly Aussie accent.

She wants very much to talk about the fourth season premiere of her show, which pulls 1.5 million viewers every Friday night, but vacation is on her mind.

"We've got kind of a wacky family," she says and then adds, so quickly we …