Remember yesterday, when James Callis was cast alongside Jamie Bamber in Ron Moore's "magical cops" pilot '17th Precinct' and we were all like "AWESOME! 'Battlestar Galactica' reunion"?

Well, take that joy and multiply it by six because another 'BSG' alum has joined the cast: Tricia Helfer. That's right -- Number 6 herself (see what we did there) will star in the NBC series.

Helfer will play Morgana, whom Deadline describes as "a necromancer, the magical equivalent of a coroner, who is an expert at manipulating the potions, tools, herbs and spells of her trade."

'17th Precinct' comes from 'BSG' mastermind Moore, and has been described as 'Harry Potter' crossed with 'Law & Order,' also known as the BEST SHOW EVER. Basically, if this pilot doesn't get picked up, the entire TV Squad staff will have to take the month of July off to deal with our collective grief.

That said, if Mary McDonnell joins the show, our faces will melt off and our children will weep over our exploded bodies as if we've all just taken huge hits of the dangerous street drug Charlie Sheen. Which would be awesome.

So with that, our open letter to Ms. McDonnell:

Dear Mary McDonnell, a.k.a. the number two most memorable woman in history according to TV Squad,
Please join this pilot. Pretty please. We have nothing to offer in return besides our undying gratitude, and the promise that we will watch every second of every episode. So say we all.
Love,
TV Squad

Tell us: Are we jumping the gun in our excitement for the show, or is this really going to be the best series ever?