Johnny Depp made a surprise appearance on Friday, joining Alice Cooper at his concert in London, honoring Ozzy Osbourne with a song just days after his death. The "Pirates of the Caribbean" star rocked out with Cooper and his band on his guitar, playing Black Sabbath’s 1970 hit "Paranoid" to a raucous audience while sporting a Captain Jack-style scarf and sunglasses. "Lovely tribute last night to Ozzy by Alice Cooper featuring Johnny Depp," one person wrote on social media while posting video of the performance.A second person posted on X: "I saw Johnny Depp last night in London. He made a surprise