When I previewed a Wiz Khalifa concert at Skully's in February 2010, I noted that the Pittsburgh emcee lacked that one big single to lift him from cult hero to rap superstar. One "Black and Yellow" later, Wiz is set to headline a sold-out LC Pavilion on Tuesday.

When I previewed a Wiz Khalifa concert at Skully's in February 2010, I noted that the Pittsburgh emcee lacked that one big single to lift him from cult hero to rap superstar. One "Black and Yellow" later, Wiz is set to headline a sold-out LC Pavilion on Tuesday.

The undisputed frontrunner in a new wave of weed rap, Khalifa made his name on a series of mixtapes with titles like "Grow Season," "Burn After Rolling" and the acclaimed "Kush and Orange Juice" before dropping his highly successful Atlantic debut "Rolling Papers" last March. To top it off, he's acting in a stoner comedy called "High School" with Snoop Dogg.

Khalifa isn't the first rapper - nor the only rising rap star - to fixate on marijuana. Kid Cudi called himself "the lonely stoner" and just released a Shia LaBeouf-directed Amsterdam romp called "Marijuana."

Still, with his mixtape success and pop breakthrough, Wiz blazed a trail for a new generation of pothead emcees. At this point weed rap has become a big enough trend to accrue serious backlash from inside and outside the ranks. Here are a few of Khalifa's notable affiliates, contemporaries and proteges.

Curren$y: In the weed rap hierarchy, nobody's bigger than Wiz, but Curren$y is better - more versatile, smarter and more satisfyingly strange.

A refugee from New Orleans' No Limit and Young Money empires, the man also known as Spitta has risen to prominence among hip-hop heads and rap-dabbling indie rockers with his ganja-obsessed "Pilot Talk" albums and his recent 4/20 collaboration with Alchemist, "Covert Coup."

Curren$y partnered with Khalifa on 2009's "How Fly" mixtape and appeared on "Rolling Papers." The pair remains tight despite Curren$y's recent dismissal of rappers who change up their style to ride the weed rap wave. His next album is called "Weekend at Burnie's," though.

Smoke DZA: The Harlem native also known as George Kush just released a better-than-decent mixtape called "T.H.C. (The Hustler's Catalog)," in which DZA collaborates with weed rap O.G. Devin the Dude and declares "I don't put nothing but Kleenex next to my nose" - in case you were wondering if he dabbles in other controlled substances.

Domo Genesis: One of the less notable Odd Future affiliates, Domo released an album called "Rolling Papers" (produced by Tyler, The Creator) months before Wiz dropped his. While Wiz's has yielded more hits, Domo's weirder, down-tempo "Rolling Papers" seems better suited for taking hits.

Mac Miller: Miller is a teenager from Khalifa's hometown who seemingly rolled off the same frat house couch as Asher Roth. He's on his way to getting huge, which is understandable if you can ignore the ridiculous pretty-boy mugging in his videos and focus on his rapping.