This will go down as having been a breakthrough year for Richmond-raised rapper IamSu! His profile went national after he put in a starring stint on Bay Area ambassador E-40's hit "Function," and he solidified his talent with last month's excellent $uzy 6 $peed mixtape. As a rapper, IamSu! exudes a playful personality and excels at spitting over beats that are club-friendly while retaining a hard, street-honed edge. Given his recent collaborations, including tracks with Wiz Khalifa and Juvenile, you should catch IamSu! up close now before he ascends to that coveted next level in 2013.