Here's a look at tonight's sci-fi TV:
Lost, 'The Lighthouse' – It looks like we'll finally learn why Island Claire has gone all rogue (and where she got that bird's nest of a wig) on tonight's ep. Elsewhere, Hurley tries to convince Jack to follow him on a mission. Does it have anything to do with Jack's father Christian? We'll find out tonight. (9 p.m. ET on ABC)
Head after the jump for clips and more TV picks.