A newly unsealed search warrant issued in California suggests that bags of marijuana were found at Michael Jackson’s Los Angeles mansion after he died. The discovery may earn Jackson a new nickname: King of Pot.

The Los Angeles TImes reported on Thursday that authorities discovered the marijuana in Jackson’s home, after they searched it when his family members discovered what was initially believed to be tar heroin at the residence. Tests revealed the substance was not tar heroin, various media outlets reported.

There is little medical evidence that marijuana can cause death, so reports that it was discovered at Jackson’s home may not go far in determining what lead to his June demise. Authorities have already indicated that the pop star had lethal levels of the anesthetic propofol in his system, and a previous search warrant showed that Jackson’s personal doctor, Conrad Murray, admitted to giving him the dangerous drug to help induce sleep.

Still, the discovery of marijuana raises questions. His former nurse, Cherilyn Lee, has said in media interviews, including this one with CNN, that Jackson did not use drugs recreationally, including marijuana.

Of course, in California it’s easy to get marijuana through medical dispensaries. In fact, it is probably easier to get marijuana than the prescription medications court documents indicate Jackson sought through various aliases.

And with so many security guards and other personnel circulating through Jackson’s famously well-staffed manor, it’s always possible that the pot belonged to someone else. Could Jackson be the victim of a puff-puff-pass that left him holding the baggie? Who knows, this story may just go up in smoke.

Britney Spears walked off the stage early during her concert in Vancouver on Wednesday, leaving stunned fans to boo and chant for half an hour while her handlers dealt with what they later delicately described as “a ventilation issue.” Translation: some of her crew members were reportedly sickened by the cigarette – or perhaps another sort of – smoke.

According to the Vancouver Sun review, the pop princess sang a few songs after taking to the stage at GM Place a little after 8:17 p.m. local time. But soon the stage mysteriously went dark, inspiring a few outbursts from impatient fans. A voice eventually came over the loudspeaker: “It’s become uncomfortable and unsafe for the performers, including Ms. Spears,” according to the report. “The show will resume as soon as the air around the stage is clear.”

The fans were not impressed, chanting and howling. The mood was “sour,” the Sun report said.

Spears returned to the stage about 9:05 p.m., performing for another hour or so as if nothing had happened. And the crowd’s spirits also appeared to lift, the report said.

Spears’ camp later issued a statement, saying: “We want to apologize to all the fans who attended our Vancouver show tonight for the brief pause in Britney’s set.  Crew members above the stage became ill due to a ventilation issue.”

Blogger Perez Hilton said Spears’ people were concerned that technicians high above the stage could become dizzy from fans’ marijuana, and he said Spears jokingly warned the crowd, “Don’t smoke weed!” as she left the stage at the end of the concert.

A spokesman for Orca Bay Sports and Entertainment, which owns the venue where the show took place told E! Online that early reports about dope smoking were unfounded and that the smoke was believed to be from cigarettes.

But, without being there, one wonders. Pot smoking has been taking place at concerts since the 1960s, and if it is true, one big mystery remains: Do Spears’ young fans roll their own, or get their parents to do it for them?

Rapper Snoop Dogg is known for his rapid-fire description of urban life’s brutalities, but his new music video is a crossover into country music and something of an ode to “My Medicine” with the help of singer Willie Nelson. 

The 37-year-old rapper wears a cowboy hat, strums a guitar and opens the video, posted on his Web site this week, with a dedication to the late Johnny Cash, by calling him “a real American gangster.”

Country icon Nelson, 75, joins Snoop Dogg in the video, and is shown leaning into a microphone and singing, between shots of Snoop Dogg running through a forest and swinging a guitar.

What’s the inspiration that unites these two music artists separated by age and music category? Medicine. Or, as the song is called “My Medicine.”

Snoop Dogg and Willie Nelson’s medicine is all but spelled out in their history and when the rapper sings the lyric, “You say you can’t buy me love, but you damn sure can buy me bud.” And on that theme, part of the video is filmed in Amsterdam.

Snoog Dogg, whose real name is Calvin Broadus Jr., has built a reputation around his love of marijuana, and he has faced a string of arrests related to possession of the drug. In 2006, Burbank police nabbed him after a performance on NBC’s “Tonight Show with Jay Leno” and said they found marijuana in his car. Nelson, too, has been popped by the police for marijuana possession and has supported its legalization.