I've noticed that Dad always watches the same GD music videos- he's watched the long version of WMUWSE so many times he knows all of the words during the talking parts of the video! And he's seen Basketcase, Time of Your Life, BOBD, and AI a load of times. So I've slipped him a small list of videos to start off with- WICA, Minority, Macy's Day Parade and Still Breathing. He's seen footage of the Leeds gig (he was gutted not to go with me) but the sound wasn't too great on phone/camera footage on YouTube. Hopefully, he will like the songs I've told him to try.