I saw a clip of someone playing the main riff from Alive by Pearl Jam, which made me want to hear the song again, so I watched a live version and ended up googling and reading other things about the song (the original meaning of the lyrics are pretty bad [imo] -- Vedder says they have changed for him over time based on how fans have interpreted the song) (which is one reason I rarely pay attention to lyrics -- save for Morrissey -- because I feel like their meanings are often disappointing.) Anyway, from the wikipedia entry re the origins of Mike McCready's guitar solo: "McCready was quick to disclaim creative credit for it, saying he basically "copied Ace Frehley's solo from 'She', which was copied from Robby Krieger's solo in The Doors' 'Five to One'."
So I listened to the Kiss song thinking McCready was being modest and was probably just influenced by it, but wow, he really copied the beginning of the solo note for note.
Here's Alive (go to 3:28)
Here's She, by Kiss (go to 2:47)
(In Five to One, the guitar solo on my computer speaker is drowned out by the organ, but I think it starts around 4:45. I'm on my couch with everyone in the apartment asleep, so I can't crank it up to make out the solo, and I'm too lazy to get up and grab my headphones, but it sounds like Ace Frehley's copying wasn't quite as explicit as McCready's.)
You can argue that that's Mike McCready's most famous guitar lick, from Pearl Jam's most popular song (it is according to Spotify), and it's just a lick he copied from Ace Frehley.
(Did the producer of the album not know? Or did he not care?)