Never mind the twenty-first century
Swedish punk/hardcore label/blog D-takt & Råpunk has put together a comp of early punk influences which, besides including a number of obvious-yet-crucial picks (Dead Kennedys, Misfits, Sex Pistols, etc.), also has a few Swedish must-hears: http://dbeatrawpunk.blogspot.com/2011/12/never-mind-twenty-first-century-fth-1.html
And when you're done with that, check this out.