TeeVoo
First time out of the vault

Maybe is the first one that comes to mind.
Another personal pick of mine would be
The original happy song juxaposed with nuclear explosions that directly inspired fallouts humor. the reference is a perfect call back.
For some reason this comes to mind
To me it fits in with some of those more "funny" or mundane aspects of boot curising the wasteland. maybe a better fit in fallout 2, but I wanted surfer/upbeat rock music to match it being set in southern California also the name "San-ho-zay" of course being "San Jose" a city in california. but maybe it would better fit with the themes of fallout 2.