Let's make this birthday one to remember.

78 years old (Born on April 12, 1947)

Happy birthday, Dave! Your iconic Top Ten lists and unforgettable Late Show interviews single-handedly inspired generations of insomniacs. From your legendary suits to the way you effortlessly turned awkward pauses into comedic gold—millions are still rewatching clips just hoping they can "borrow" some of your wit.

Even post-retirement, you've shown us that growing a glorious beard is apparently how comedy legends spend their downtime. You've reinvented yourself on Netflix with insightful conversations yet kept that classic Letterman humor intact—proving once again you're timeless in every format (and facial hairstyle). Keep bringing smiles; here's wishing another hilarious year ahead!