It is completely, 100% all about Zooey Deschanel.

Not only is she named after one of the best Salinger characters, she has a surprising musical talent, down to earth look-n'-feel, awesome deadpan voice, and seems like the kind of person that would be down for a game of Mario Karts at any hour of the night or day. I suppose her lookalike Katy Perry can have a few cute points as well, but she seems more like the heavily processed Little Debbie snack cake to Zooey Deschanel's home cooked mashed potatoes and gravy.
Lesser beings:

Sarah Chalke, also known as Elliot Reed from Scrubs and Everyone In Every Lifetime Original Movie Ever. She can go toe-to-toe with Zach Braff and speaks fluent German!

Andrea Bennett, Onion News anchor. Looks like she could grill a mean burger, or possibly kick your ass at tennis. Maybe both at once.

Stephanie Courtney, also known as Flo from the Progressive commercials. Can't really explain this one, but somehow she pulls it off. I think she does standup comedy, which is bonus points.