Let's make this birthday one to remember.

57 years old (Born on April 18, 1968)

Happy Birthday, David Hewlett! From battling Wraith in "Stargate Atlantis" to mastering sarcastic comebacks as Dr. Rodney McKay, you've given us countless memorable moments filled with wit and charm. Your brilliant portrayal of everyone's favorite genius scientist has left fans laughing (and occasionally face-palming) for years.

May your birthday be free from malfunctioning Ancient technology and unexpected wormhole mishaps—though we know you'd handle them hilariously well anyway! Here's hoping the coming year brings you even more success, laughter, and perhaps fewer life-threatening alien encounters. Keep being awesome; after all these adventures through galaxies far away, you're still our favorite astrophysicist-turned-comedian hero!