Best punk/new wave singles

Spurred on by the BBC6/Marc Riley thread just now, what's your fave single, 76-79ish? Dunno why I'm picking this, as it's never seen as one of their best but I remember hearing it for the first time and.....I find it difficult to find the words even now but there's something about the clapping/marching sound colliding with Paul Cook's cascading drums, then Jonesy's massive guitar sound and Lydon's furious, bilious snarl. Gawd. Never forgot the feeling of hairs standing up on the back of my neck.
Holidays in the sun is one of their best songs easily and one of the best punk songs too. So much anger and energy. Superb.