Either of The Protomen's albums. "The Protomen" if you want heavier stuff, "Father of Death" if you're partial to 70's-80's style rock.
If you don't want to buy the whole albums, some good songs are "Vengeance", "Sons of Fate", "Father of Death", "Breaking Out", and "Light Up The Night".
Really, you're not getting the full experience if you only buy songs. These albums are albums, not collections of singles. The second one more than the first.