From this entry by sonjaaa and the video she linked to ("This is the New Sh#*t" by Marilyn Manson, interpreted in ASL), I clicked around YouTube for other ASL songs, and ended up on this performance of "God Bless the USA".
Hearing that song reminded me of my mission and hearing Elder La Rocca sing it—he was Italian, but (as I recall it) one of his American companions had made him learn the song, and he'd occasionally sing it. So that song reminds me of him.
And that reminds me of fun times. He was a great guy to be around.