4. 'Flashing Lights'
"Flashing Lights" wasn't a huge radio hit, but in hindsight it's probably the best song on Graduation. Featuring vocals from soul singer Dwele, "Flashing Lights" manages to feel like a throwback to disco and a future rock song at the same time. Like many great Kanye songs, it's about a man struggling with the end of a relationship. "Feeling like Katrina with no FEMA," he raps. "Like Martin with no Gina/Like a flight with no visa."