As a warning, the Sochi's Big Bash show is really two shows in one: an Olympic preview show combined with a review of the cricket T20 Big Bash and a preview of the grand final (which is on Friday). The commentators/presenters will be cricket ones - though it involves Gilly and Flem so I will never complain because they are wonderful - so I doubt they'll get into any great depths.
It goes from 8:30-midnight though, which is pretty good (I think it shows some snowboarding qualifying runs too?). Unfortunately, Channel 10 completely lets us down by not showing the Team Event Men's and Pairs SPs even though there are no other sports to compete with on that night.