Taye Diggs is on his way to join Grey's Anatomy in a bizarre trial run in anticipation of a Grey's Anatomy spin-off. You caught up, yet? That's a lot of info to take in, and ABC is certainly doing their best to confuse everyone with this whole spin-off business. Let me catch you up in the most clear and concise way possible.

So, ABC has announced that there will be a Grey's Anatomy spin-off, featuring Dr. Addison Montgomery, Kate Walsh's character from the show. Although the first mention of this project came within the last two weeks, the first episode is supposedly set to air in the summer. This means that the wheels have been turning for quite some time on the project, that they've probably been filming concurrently with the original Grey's. This doesn't seem too likely, or even possible, but it appears to be so.

The Taye Diggs information makes everything more interesting, because he has (supposedly) been cast as a main character on the spin-off, but will be appearing in upcoming episodes of Grey's Anatomy. This could mean a number of things. That Grey's Anatomy liked Diggs so much that they expanded his character into the spin-off after filming his episodes. It could also mean that Grey's needed a catalyst for Addison's departure from the show, that would allow her character to plausibly begin a spin-off. I'm guessing it's the latter (it sounds more convenient), but you never know. This whole thing is a little confusing.