Erin Throws Cake at Andy

No Please God No

Dance party!

Michael is Happy

Michael Sprays Champagne

Is It Your Birthday?

It Is Your Birthday.

Why Are You the Way That You Are?

Goodbye My Lover, Goodbye My Friend

Michael Is Flabbergasted

Creed's Sad Birthday Song

Happy Birthday, Girl!

Michael Gags

Michael Knows

Happy Birthday Sister

Happy Birthday Friend

I Understand Nothing

Pam Is Excited for Her Dundie Award

I made you this cake!

Are You Trying to Hurt My Feelings?

Michael Sings the Wrong Song

Happy Anniversary!

Michael Force Feeds Kevin Broccoli

Dwight Laughs Maniacally

Birthday Dance