Let's make this birthday one to remember.

89 years old (Born on May 30, 1936)

Happy birthday, Keir Dullea! May your celebrations be as timeless and mysterious as that unforgettable journey aboard Discovery One. Just remember—if HAL offers to bake the cake, politely decline.

From navigating cosmic enigmas in "2001: A Space Odyssey" to captivating audiences with thoughtful performances throughout your career, you've truly made cinematic history. Your portrayal of astronaut Dave Bowman remains iconic; after all these years we're still wary about trusting computers completely!

Here's wishing you another stellar orbit around the sun filled with laughter and success—and may every door open smoothly without needing a space helmet or existential crisis!