Isn’t it great when a band you love covers a song you love… and does it well? There are at least 22 different versions of “I’m a Believer”, which Neil Diamond wrote and the Monkees took to No.1 in 1966. Now you can add Weezer’s version to that list, because they have covered it for the Shrek Forever After soundtrack. Covered by Smash Mouth for the first film’s soundtrack, it has sort of become the theme song for the entire franchise of movies. Weezer doesn’t translate “I’m a Believer” into anything other than what it really is, a fun, rockin’ song. While there’s something to be said for when a song is completely re-interpreted into something else, it’s still awesome when somebody plays it straight instead. So, here we have, courtesy of frontman Rivers Cuomo’s tweet, this fan-made YouTube video.