Green Day at Lollapalooza 2010, photo by Jack Edinger

It’s big, it’s burly, and if it were a dude (or a girl) it would probably have a mustache. The three-day festival that is Lollapalooza kicks off this Friday, from August 5 to 7, in the windy city of Chicago. The lineup is pretty hefty, with headliners coming in the form of Eminem, Foo Fighters, Coldplay and Muse, plus CMJ alums like Young the Giant, DOM and Dale Earnhardt Jr. Jr. There are many other bands to see in between them all (check the trusty schedule to make sure you’re fully prepared).

In the meantime, if you haven’t experienced Lollapalooza/have been to the fest and are feeling a bit nostalgic, behold this video series celebrating 20 years of Lolla’s existence. Memories always look better via 2-D interface, right?[/vimeo]

The reason why we’re telling you all of this is because we have a pair of three-day passes to give away. All you have to do is enter your details below by 9 a.m. EST this Thursday, August 4, and we’ll hit the lucky winner back with the good news via email.