The bonus material for Paul Thomas Anderson's Punch Drunk Love(2002) included a hilarious local commercial starring Philip Seymour Hoffman's mattress-salesman antagonist - itself a beat-for-beat recreation of a real low-budget ad/blooper from some time earlier. The original guy and Hoffman both deliver the line "I fucked up my guitar, though."

20 years later in Licorice Pizza, there's the scene where Alana >!falls off the motorbike, landing on and crushing the guitar on her back before being rescued by Gary(Cooper Hoffman). In the heat of this romantic moment, the first thing she says to him is "I fucked up Danielle's guitar.."!<

It's a fleeting detail, but I think Paul Thomas Anderson writing and directing that line for a heroic scene w/ Philip Seymour Hoffman's son(himself playing a mattress salesman!) is awesome and definitely added another layer to a great movie moment.