There has been a lot of speculation in the last couple of weeks that Sara Ramirez (Dr. Callie Torres) will be leaving the cast of Grey's Anatomy later this season.

We have not reported these rumors to you so far because they are only that - speculation. But given the sheer amount of attention they're generating, we're going to now. Nothing you read below is confirmed, but some of the rumors and theories are:

• That Sara Ramirez will be departing Grey's Anatomy after episode 15 or 16. This past week's episode, "These Ties That Bind," was the eighth of Season 5.
• That Brooke Smith is not the only one being let go from the show, and given her relationship with Smith's character, Erica Hahn, Sara Ramirez is next.
• That Sara might be headed back to Broadway, where she was a star.
• That Melissa George's character Sadie was brought in (or possibly re-written after Smith's departure) for Eric Dane's character, Mark Sloan, because the ABC executives wanted a different, fairly big-name actress for his love interest.

Again, this is pure conjecture and nothing more. But What do you think of these Grey's Anatomy rumors - and have you heard any others? Share with us ...

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