Kanye is where it's at nowadays. His newest stuff (G.O.O.D. music) hasn't been that great, but College Dropout, Late Registration, Graduation, and My Beautiful Dark Twisted Fantasy are all classics. I'd even put MBDTF up there with Nas's Illmatic. Lyrically, nothing can touch Illmatic, but Kanye's stuff is great theme wise and his production can't really be beat.
"Runaway" from MBDTF
"Family Business" from College Dropout
"Diamonds from Sierra Leone" from Late Registration
"Everything I Am" from Graduation