The Growing Pains star -- who died at age 69 on Tuesday -- was no stranger to our TV screens, popping up in many of our favorite shows, where he always seemed to make a big impact no matter how brief his appearance.
The Hollywood icon was all over the place, appearing in a variety of shows, including How I Met Your Mother, Joey, American Dad, Lamb Chop in the Haunted Studio, Tim and Eric Awesome Show, Great Job!, as well as more recently on NBC's This Is Us and Fox's Grandfathered.
Watch the video above for seven of his funniest cameos.
We're gonna miss this, Alan Thicke. Thank you for delighting us, time and time again.