end of galactica and lost and questions...

i hope the question i have below will be answered by the end of the season else i'm gonna be very pissed...

BSG

who/what is kara thrace?

how come gaius is the only one that keeps seeing the cyclon#6 chick?

LOST

how will jack and co get back to their own time?

how will they get off the island AGAIN?

who is the villain, ben or whitmore?