We've already seen the first 11 minutes of the episode in its entirety, but now, here are six individual sneak preview clips from tomorrow night's alternate universe episode of Grey's Anatomy, "If/Then."

A number of these scenes are included in the opening minutes, which you can follow the link above to watch. But some of them are new as well, offering even more insight into Mer's "what if" world.

The faces are all familiar (some who are no longer with us in Seattle, as it turns out), but their relationships to one another could not be more foreign. Watch the sneak peeks and comment below ...

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