On May 15, we celebrate the birthday of David Krumholtz, a versatile actor whose career has spanned comedy, drama, television, film, and even a few Christmas classics that resurface every December whether you’re ready for them or not. Born in 1978, Krumholtz has built a reputation as one of those dependable character actors who can steal a scene with a single line—or a perfectly timed eye roll.

David Krumholtz was born in Queens, New York, into a Jewish family with roots in Hungary and Poland. He grew up in a typical New York environment, full of personality, noise, and plenty of material for a future actor to draw from. Acting wasn’t initially part of some grand childhood plan, but when an opportunity came along, he jumped in—and it turned out he was very good at it.

At just 13 years old, Krumholtz landed his first major role in the 1993 film Life with Mikey, starring opposite Michael J. Fox. He played Barry Corman, a wisecracking former child star, and the performance immediately showed his natural comedic instincts. It’s not easy for a young actor to hold their own in scenes with a seasoned star, but Krumholtz managed it with confidence, humor, and the kind of timing most comedians spend years trying to develop.

The following year, he landed a role that would make him permanently associated with holiday movie marathons: Bernard, the sharp-tongued head elf in The Santa Clause (1994). With his dry delivery and slightly exasperated attitude toward the chaos around him, Bernard became a fan favorite. Krumholtz reprised the role in the sequels, ensuring that every December, audiences would once again hear him explain the fine print of Santa’s contract.

Throughout the late 1990s, Krumholtz appeared in a variety of films that showcased his range. In Slums of Beverly Hills (1998), he played Ben Abromowitz, a sensitive and thoughtful teen, while in 10 Things I Hate About You (1999), he played Michael Eckman, the sarcastic and loyal best friend. His performance in the latter film made him a standout in a cast filled with future stars, proving that sometimes the funniest lines belong to the guy standing just off to the side, delivering commentary like he’s the only one who realizes he’s in a teen movie.

Krumholtz continued working steadily in both film and television, appearing in projects like The Mexican (2001), Serenity (2005), and Harold & Kumar Go to White Castle (2004), where he popped up in a memorable cameo. He developed a reputation as an actor who could slide effortlessly between genres—comedy, drama, sci-fi, romance—without ever feeling out of place.

One of his most significant roles came in 2005 when he was cast as Charlie Eppes in the CBS series Numbers. As a mathematical genius who helps his FBI agent brother solve crimes, Krumholtz brought warmth, intelligence, and humanity to a character who could easily have been reduced to a stereotypical “quirky genius.” The show ran for six seasons and became a hit, allowing him to demonstrate his dramatic abilities and anchor a major network series.

Off-screen, Krumholtz has a reputation for being down-to-earth, witty, and refreshingly candid. He’s a longtime comic book fan, particularly of Batman, and has spoken openly about his love of nerd culture long before it became the dominant force in Hollywood. He’s also known to enjoy poker, occasionally appearing in celebrity tournaments, where his calm demeanor and sharp thinking make him a tough opponent. It turns out that the guy who played a math genius is pretty comfortable around numbers in real life, too.

In 2011, Krumholtz faced a serious personal challenge when he was diagnosed with thyroid cancer. After undergoing treatment, he successfully beat the disease and later spoke publicly about the experience, helping raise awareness and offering encouragement to others facing similar diagnoses. His openness about the ordeal earned him respect from fans and colleagues alike.

In recent years, Krumholtz has continued to work steadily, appearing in a wide range of projects, from independent films to major television series. He’s taken on roles in shows like The Deuce and The Plot Against America, proving that as he’s matured, so have the parts he chooses—often more complex, layered, and dramatic.

David Krumholtz’s career is a great example of the power of consistency and versatility. He may not always be the name at the top of the poster, but he’s often the one delivering the lines people remember. Whether he’s playing a sarcastic teenager, a mathematical prodigy, or the most no-nonsense elf in the North Pole, he brings intelligence, humor, and authenticity to every role.

Here’s to David Krumholtz—an actor who has quietly built one of the most interesting and reliable careers in Hollywood, one memorable character at a time. Happy Birthday!