Every time I hear Let It Die by the Foo Fighters, it reminds me of two other songs. The bass part, early in the song, gives us a hint of the melody I'm referring to; it's not until 2:47 in, that the guitar gives me a strong sense that I've heard this somewhere else. Have a listen.
Journey's Stone in Love has a similar part that comes in at 2:33.
And the Oooooooo'ed melody of Level 42's Something About You also sounds a bit familiar.