If you've followed ska-punk at all for the past decade, there is an extremely good chance that you've heard of We Are The Union. 
An instant classic when it was released, the record defined the pop-punk / ska crossover sound that would come to dominate the late 2000's - many bands tried to emulate it, but few have succeeded so seemingly effortlessly.  
Powered first and foremost by the anthemic and memorable vocals of Reed Walcott, the record is equal parts speedy pop-punk, hardcore, and ska, all with a melodic trombone cherry-on-top.  Track 4 of Side A contains the band's arguably best know song "I'm like John Cusack..."; a quintessential pop-punk anthem that will have you stage-diving off your couch, with a horn line you'll have stuck in your head for days. If you're a ska-punk fan and you haven't heard this record yet.... frankly, I'm a little jealous.  You're in for a treat.

We Are The Union - Who We Are (12")