rap has never been really groundbreaking or amazing imo... it sucked in the 80s.. late 80s to 90s it got ok with guys like 2pac, snoop, drdre, ice cube, eazy-e, dj quik, nas etcetcetc. I guess if I like any rap it has to be gangster rap... nowadays everything seems awful, but you have to admit some of this shit can be catchy as hell and even fun to listen to. The Game still produces some decent stuff(style is more of a throwback to 90s gangster rap), and I like Kid Cudi, whose style is more alt-hip hop
http://www.youtube.com/watch?v=nfAR5wKEp4A&feature=related