Below is a clip from the Grey's Anatomy-Private Practice crossover event, which continues Thursday evening in the setting of Seattle Grace hospital.

Ever the cool customer, Derek finds his confidence shaken while in the O.R. with ex-wife Addison, debating what treatment is best for their patient ...

[video url="http://www.tvfanatic.com/videos/greys-anatomy-private-practice-sneak-preview-219/" title="Grey's Anatomy-Private Practice Sneak Preview: 2.19"] [/video]

Follow the jump for another preview - by this point, Addison is back in California, delivering a baby and uttering some words no parent wants to hear ...

[video url="http://www.tvfanatic.com/videos/wait-and-see-sneak-preview/" title="Wait and See Sneak Preview"][/video]

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.