Nurse!

Tyler injured his head, neck and shoulder from the spill -- and although he couldn't ruuuun away, ruuuun away from the pain ... he was able to make it to the hospital by helicopter.

UPDATE: Joe Perry's wife Twittered that Steven broke his shoulder and had to get stitches in his head and back.

There's nothing like the high from a great workout.

Falling in love is so hard on the knees -- but falling on stage, that's hard for your head, shoulder and neck.

Aerosmith frontman Steven Tyler was airlifted to the hospital last night after falling from a stage in South Dakota midway through a concert.

The whole thing went down after the soundsystem failed during "Love in an Elevator" ... and Tyler began to dance to keep the crowd entertained.

It's unclear how serious his injuries were, but Tyler was reportedly still livin' it up after going down -- joking with the physician in the helicopter.

Bam Margera has found a more effective way of dealing with his marital problems than going on a four day bender: Marriage counseling and meds.

The "Jackass" star, who was recently hospitalized with "dehydration" after a drinking binge, says he's been trying to work it out with wife Missy -- and she's forced them into couples counseling twice a week.

Bam also tells us Missy "thinks I have a split personality, like Jekyll and Hyde" and he has been taking the antidepressant Lexapro to control his "mood swings."

TMZ has confirmed "Criminal Minds" actor Shemar Moore was hit by a car while riding his bicycle in L.A. on Saturday.

A rep for Moore -- who once dated Halle Berry -- tells us the actor was rushed to a local hospital and treated for a broken leg.

Costner was okay, but we're told two members of his band were taken to the hospital. A witness on scene tells TMZ he saw Costner helping people out of the wreckage.

Country music singer Billy Currington was performing his last song when the stage collapsed. He was ok.

Drake collapsed while performing his hit song "Best I Ever Had" after his knee buckled underneath him. He had to be carried off stage and Lil Wayne had to finish the show himself.

We've learned Dr. Arnold Klein once took Michael Jackson to the office next door to his -- run by a gynecologist specializing in vaginal rejuvenation -- to perform a minor acne treatment on the singer under full anesthesia.

We spoke with Dr. Harvey Richmond who told us ... around 2003, Dr. Klein asked him if he could use Richmond's surgery center in his office to perform a procedure on Jackson.

Dr. Richmond says, per Klein's request, he got an anesthesiologist and a scrub tech who worked on Jackson.

Dr. Richmond says he found it "odd" that Dr. Klein performed "some sort of acne treatment" with full anesthesia. Dr. Richmond says he believes the anesthesia used was Propofol, the same drug that may have killed Jackson.

Dr. Richmond says the 2003 procedure was the only time Dr. Klein used his office for Jackson.

And there's this -- Dr. Richmond says Jackson stiffed him on the bill, eventually only paying half after Richmond threatened to take the singer to Beverly Hills small claims court.

Tom Jones -- the man whose music sparked "The Carlton" dance craze back in the 90's -- has suddenly been forced to retire his microphone ... for a little while.

A rep for Tom released a statement saying his angelic pipes are suffering from viral bronchitis, and he's been forced to cancel tour dates until he can once again bring joy to awkward, nostalgic dancers across the U.S.

Shaquille O'Neal's wife Shaunie was taken to the ER yesterday after a teenager slammed "full speed" into her car -- which was en route to the airport.

Police confirm to us they responded at 6:18AM Tuesday morning. Shaunie, who Twittered about it, says she's "super sore ... but I'm good."

According to police, three people were taken to Dr. P. Phillips Hospital with only minor injuries.

Shaunie's biggest pain now: Dr. Shaq, who's keeping her on strict bed rest.

The "Jackass" star blames the "4-day bender" on marital problems, telling us "I may get a divorce ... booze helps."

TMZ also spoke to Bam's mother -- who told us Bam's wife Missy called 911 because she was worried about his health after learning that he popped an Ambien during the drinking bender.

Margera says his kidney and leg muscles were a mess from not eating or drinking enough water -- but the hospital flushed out his system and he was released to his home after speaking to a psychiatrist.

April Margera just called into WMMR radio in Philadelphia to explain why a 911 call for a "possible overdose" was made for Bam yesterday.

April -- who just got back in town from a vacation -- said Bam had been filming for the MTV show "Nitro Circus" and had become "severely dehydrated." She said when Bam films stunts for shows like "Nitro" -- which is just like "Jackass" -- he forgets to take care of himself and doesn't eat enough.

April also said "basic partying" played a factor and she heard Bam walked to the ambulance on his own power.

As we first reported, Bam was taken to the hospital yesterday at around 1:30 PM.

TMZ has learned "Jackass" star Bam Margera was rushed to the hospital yesterday after paramedics responded to a 911 call for a "possible overdose."

We're told state troopers and medical personnel arrived to his home in West Chester, Pennsylvania at around 1:30 PM.

The cause of the collapse, which killed two people, is still unknown.