Happy 55th birthday to the one and only Will Arnett! May 4th has officially become "Will Day" because let's be real, you age like a fine wine and only get better with each passing year. But seriously, Wishing you an amazing day filled with laughter, love, and all the waffles your heart desires. Keep slaying on and off the screen! Cheers to another year of being the coolest 55-year-old we know.