The Clash. Starting out as a pretty good punk band. But their masterpiece was the 1979 London Calling. Where many punk bands were people without a lot of musical talent, they instead incorporated elements of everything from rockabilly, to ska, to reggae. This in a genre dedicated to the pursuit of rock at its most basic.
"Sandinista!" was their masterpiece, and it is finally being Vindicated by History. It actually has a tribute album.
Hell, the Clash are so good that even their rubbish albums have classic songs. See "This Is England".
The Eighties Matchbox B-Line Disaster's "Mister Mental" adds a certain awesome to any scene.
A Wilhelm Scream: the critically-acclaimed 2007 album Career Suicide. Asides from being the peak of their tight, punk/metal hybrid sound and featuring the band's new, gnarly bassist, AWS dropped two songs from the tracklist because "they weren't fuckin' fast enough!!" some bass CMoA.
"Smash It Up", a punk anthem for anarchy rivaling the Sex Pistols' "Anarchy In The UK". Or hell, anything from an album with Captain Sensible on it's guaranteed to be Goth-Punk gold.
Streetlight Manifesto. Take ska, expand the horns to two saxes, a trumpet, and a trombone and give it a more agressive feel. Of note their album Somewhere in the Between, in which every song features an epic horn feature.
Everything Goes Numb is an excellent ska album. "Point / Counterpoint" is musical brilliance.
Short Stack have many wonderful songs, but "In This Place" is one of the best.
"A More Perfect Union" by Titus Andronicus. You might think a seven minute punk song about New Jersey and Civil War iconography bookended by a rendering of an Abe Lincoln speech wouldn't be awesome, but you'd be wrong. From "All the armies of Europe and Asia could not by force take a drink from the Ohio River," to "I was never trying to change the world, I was just looking for a new New Jersey," to "Rally round the flag, boys, rally once again, singing the Battle Cry of Freedom!" everything about this song is pure undiluted awesomeness.
"The Battle Of Hampton Roads". It's the epic "fourteen minute long" album closer of The Monitor, and it is made of PURE AWESOME. The entire thing moves at a whiplash pace, the lead singer sings what seems to be a hundred words a minute, and the whole thing builds and builds with guitar solos and shouted vocals and a refrain of "please don't ever leave me," all to a FREAKIN' BAGPIPE SOLO. OH MY GOD.
"The Vulture (Acts I&II)" by Gallows. Who knew that the same set of lyrics repeated several times could be so kick ass? The first couple times, it's all calm... then comes the huge epic crashes of distortion that last for almost too long... then the amazing punk song that takes the dark and grim lyrics of Act I and makes them ANGRY AS ALL HELL!
At Coachella 2012, it only took two seconds of the opening drums for this track to let the audience know what they were in for.
Johnny Thunders & the Heartbreakers' "London Boys", which was a Take That to the Sex Pistols for their song "New York", itself a Take That to Johnny Thunders' former band New York Dolls.
Dead Boys parent band Rocket From The Tombs, (and their songs "Ain't It Fun", "Sonic Reducer", "Down In Flames", etc.) who also spawned avant-garde band Pere Ubu. Their original version of "Ain't It Fun" kicks the Dead Boys' version to the curb. Other good tracks are "30 Seconds Over Tokyo", "So Cold", "I Sell Soul", "Amphetamine", and "Muckraker."