Zachary Levi’s birthday was last week and in addition to the fan campaign to raise money for the American Heart Association (more than $21,000 has been raised in the name of Chuck Bartowski), the folks on the set of Chuck helped celebrate the big day. Ali Adler snapped a photo of Zac cutting the cake and Tweeted it for us:

And someone on set took a video of the cast and crew singing Happy Birthday to Zac, who gets choked up and decides to attack the cake with a knife rather than give a long speech.
I wish you a great belated birthday Zach hope you had fun with the cast
Belated happy birthday to Zach! I hope I’ll be able to watch a chuck set! I’m really a fan!