Let's make this birthday one to remember.

45 years old (Born on February 17, 1980)

Happy Birthday, Jason Ritter! From charming us in "Joan of Arcadia" to keeping our pulses racing during every suspenseful twist on "The Event," you've proven talent truly runs deep. Clearly, being John Ritter's son isn't your only claim—your own charisma and humor have made you unforgettable.

Here's hoping this year brings even more exciting roles (and fewer alien conspiracies). May your birthday be filled with laughter worthy of a sitcom legend—and cake delicious enough for an Emmy nomination. Keep shining bright; Hollywood wouldn't feel the same without that signature smile and timeless charm we all adore!