Dr. Miranda Bailey, more familiar from Grey's Anatomy, crosses over to the world of Private Practice, where she meets Dr. Charlotte King. Those two personalities should be interesting to see interact!

Addison and Miranda on Private Practice. The latter came over from Grey's Anatomy this week to spice things up.

Addison tends to a homeless mother and child on a very special episode of Private Practice. "Pushing the Limits" was appropriately named.

Addison becomes crazy cat lady on Private Practice. Somehow it works.

On the episode "The Hart Part," Sam and Addison are hiking when they encounter a couple in need of help. Naturally, they come through for them.

Addison gives her father a chance to talk in this scene from Private Practice. The latter is played by veteran actor Stephen Collins.

Sam and Addison talk things over. Should these two be a couple or remain friends?

Kate Walsh has really come into her own as the leading lady of Private Practice. She's the best.

Sam, Charlotte and Addie in a meeting on Private Practice. How will the business thrive with its new roster?

Addison Montgomery of Private Practice. She's become part of a great ensemble cast on the Grey's Anatomy spinoff.

Addison Montgomery in "Another Second Chance," the Private Practice installment of the January 2010 crossover with Grey's Anatomy. She rules!

Sam and Addison talk things over. The two work well together and have great chemistry - romantic or not.