Two more worth mentioning:
2.The verse part of “Cumbersome” by Seven Mary Three is identical to the chorus of Hey Jude by the Beatles, right down to the key and tempo. Whenever Cumbersome used to come on the air I’d immediately start singing “Naaa-Naaa-Naaa,NaNaNaNaaaa…”
Chris W
Elvis Presely’s “It’s Now or Never” is eerily similar to the Italian Standard “O Sole Mio”.
My Country 'Tis of Thee and God Save the Queen. Listen carefully and you can hear the similarities. 
The similarities abound…To Anacreon In Heaven and The Star-Spangled Banner…
Curses! Foiled.
Holy Cats, I was just about to post this exact same thing! That song IS “Kodochrome”, and I have indeed sang the “Kodachrome” lyrics over the chorus to prove it to my wife. “Kodachroooo-oooo-ooome…they give us those niiiiiice bright colors…”
Fleetwood Mac ripped off Kodachrome just about note for note on their new single.
Another Belle and Sebastian one:
B&S evidently borrowed the flute part from Love’s “She Comes in Colors” for the piano part of “Seeing Other People” (my favorite Belle and Sebastian song, too!)
Speaking of “She Comes in Colors,” it evidently “inspired” “She’s Like a Rainbow” by the Rolling Stones.
I’ve always thought that the first four notes sounded identical to the Badfinger classic “Day After Day”.
***“Don’t you feel like **trying something new…
Don’t you feel like breaking out or breaking us in two”
vs.
**"I remember *finding out about you…
Every day my mind is all around you"
I remember hearing the opening guitar riff of Johnny B. Goode and then being surprised when the Beach Boys chimed in with Fun, Fun, Fun.
I always thought that Natalie I’s song “TORN” and A1’S song “CAUGHT IN THE MIDDLE” sounded exactly the same especially at the start.
Rudy Vallee’s “I’m Just a Vagabond Lover” sounds suspiciously similar to “Why Won’t my Dreams Come True?” by the Coon & Sanders Night Hawk Orchestra.
Also, the first few notes of the Norwegian national anthem are the same as the beginning of “Deck the Halls with Boughs of Holly.”
I’ve always admired The Kinks for having two different hits with the same song, You Really Got Me and All Day and All of the Night.
The Beach Boys “Surfin’ USA” sounds so much like Chuck Berry’s “Sweet Little Sixteen” that I believe they had to give him their royalties.
OK, the Coldplay song is apparently called “Clocks”, and it reminds me of the Bronski Beat song “Small Town Boy”.
The new Fleetwood Mac single that sounds like “Kodachrome” is called “Peacekeeper”. It is the song which seems to have a rooster on background vocals. It has gotten pretty good airplay in the Boston area.
Any song done by Rick Astley sounds the same to me…
“Stairway to Heaven” sounds suspiciously like “Taurus” by Spirit, an obscure song by an obscure band that predates “Stairway” by a few years.
It only plays a short bit of the intro, but the song is basically variations of that acoustic appreggio with some woodwindlike sounds (an early Moog?) in the background.
Also David Lee Roth took “Walk this Way” and remade it “Hammerhead”.
Also, and I am not sure who came first, but the Sir Douglas Quintet’s “She’s About A Mover” and the Beatles “She’s a Woman” sound very much alike.
Paul McCartney’s song “Listen to what the man said” sounds like the Fats Domino song “Walking to New Orleans”. And the middle part of Paul McCartney’s song “Live and Let Die” sounds like the Sugarloaf song “Green Eyed Lady.” Prince’s song “Little red corvette” sounds like The Supreme’s song “Up the ladder to the roof.”
The songs I want a New Drug and Ghostbusters sound like the song Pop Musik by M.
The Chicago song “25 or 6 to 4” sounds like the Led Zeppelin song “Babe I’m gonna leave you.”
The Chicago song “25 or 6 to 4” sounds like the Led Zeppelin song “Babe I’m gonna leave you” which sounds like The Beatle song “As my guitar gently weeps” which sounds like the song “keep the ball rollin’” by Jay and the Techniques. lol