Megan can sing and dance up a storm. Before she became a TV star, she was a well respected musical theatre performer. She definitely sang and danced quite well in the "How to Succeed in Business" Broadway revival. If you met her in person, you'll also see that she's in swell shape.
"It does what a musical is supposed to do; it takes you to another world. And it gives you a little tune to carry in your head. Something to take you away from the dreary horrors of the real world. A little something for when you're feeling blue. You know?"