Everyone’s favorite Canadian cutie (that’s right, Rachel McAdams, you heard me) is joining NBC’s “Parks And Recreation” for Season 6. Now ostensibly Tatiana Maslany has been hired to play Aziz Ansari’s lady love for an episode or two. But I’m too giddy with the prospect of one of my favorite new TV actresses joining my favorite sitcom to settle for two episodes. I already have visions of her braiding Leslie’s hair. Perhaps while sporting a Russian accent? Listen, with the departure of Rashida Jones, Leslie’s need for a new best friend is much more important to me than who Tommy Haverford is dating. Come on, tell me these two aren’t made for each other.