Jackass star Ryan Dunn's co-star Bam Margera is in the center of the storm brewing over the alleged untimely and distasteful comment on Dunn's death by Pulitzer Prize winner film critic Roger Ebert.

Bam Margera offered an acerbic reply to Ebert's tweet about Dunn's car accident. Ebert had tweeted: Friends don't let jackasses drink and drive. Margera took offence to the comment and tweeted: About a jackass drunk driving and his is one, f**k you! Millions of people are crying right now, shut your fat f****g mouth!

He further quoted: I just lost my best friend, I have been crying hysterical for a full day and piece of s***t roger Ebert has the gall to put in his 2 cents.

Ebert retorted tweeting: Perez Hilton's readers agree with me and not with Perez about my tweet on Ryan Dunn. He drank, he drove, 2 people died.

However, Ebert has had a change of heart and in a post he sounded apologetic as he stated: I don't know what happened in this case, and I was probably too quick to tweet. That was unseemly. I do know that nobody has any business driving on a public highway at 110 mph, as some estimated -- or fast enough, anyway, to leave a highway and fly through 40 yards of trees before crashing. That is especially true if the driver has had three shots and three beers. Two people were killed. What if the car had crashed into another car?

Ryan Dunn and his co-passenger Zac Hartwell died after Dunn's 2007 Porsche 911 GT3, which was capable of hitting 190 mph, swerved off the road and hit a tree before breaking into flames. Dunn's body was charred beyond recognition and he was recognized by the tattoos on his body. Reports have confirmed that the two died from impact and fire. An accident reconstruction reveals that the car was speeding at 130mph.

Dunn's longtime friend Margera has openly given vent to his loss and speaking with myfoxphilly said: I've never lost anybody that I care about; he's my best friend.

Margera and Dunn started their tryst with reckless stunts which brought them into prominence when they started filming videos of underground skateboard and stunt videos.  Dunn was working as welder at a gas station those days when Johnny Knoxville discovered him.

Bam Margera first came into spotlight as a 13 year old pro-skater and as a teenager he filmed the CKY video series which featured skating stunts. Margera's website reveals that he was voted the most influential/powerful person under 30 by Stuff Magazine in 2006. He holds the record for attendance at a personal appearance he made at the Mall of America. That would be in the ballpark of 30,000 screaming fans.

Bam is also involved with the music industry as a music video director with his show Radio Bam.

Margera is married to his childhood friend Missy Rothstein. He made nine-part reality TV series of his path towards marriage called Bam's Unholy Union. His wedding festivities included performance by rocker Iggy Pop, appearances by skateboard legend Tony Hawk and James Iha, of Smashing Pumpkins fame.

Last year, Margera was involved in an incident whereby he was assaulted by a woman named Elizabeth Liz Ray. The incident transpired as a result of a shouting volley between the two outside the woman's house on South Matlack Street. It was then reported that Margera was found lying on the street and bleeding from the head on June 12, 2010.

The woman who had hit Margera will no longer be spending time in prison as she was pardoned after Margera told the authorities that he did not want to pursue the case further and send her to the prison.

In 2009 Margera's Mom called a Philadelphia radio station and stated that Bam Margera had not called the 911 due to a possible overdose. She cited that Bam had become severely dehydrated while filming the MTV show Nitro Circus.

Bam Margera was also arrested for unlawful possession of a dangerous weapon in 2006, after trying to pass through a security check-point at LAX airport in Los Angeles with brass knuckles. He was released the next morning after posting $20,000 bond, say IMBd records.

Recently Margera used Twitter to vent out his anger at his friend who dmaged his Lamborghini by pumping diesel into car. He tweeted: Cleveland a*****e!! Who puts diesel in a lamborf**kingghini! Cleveland! I hate him. (sic). And when his friend offered an apology Margera tweeted: You fat f**k! Who apologises about ruining a 250,000 car asshole! Somebody like cleveland. I am gonna fry every belonging you own fatso!!! The damage cost him $45,000 in repairs.

However Margera can now set his twitter gun against Westboro Baptist Church which has decided to picket Dunn's funeral. The church issued a statement saying:  WBC will picket any public memorial/funeral held for Dunn, warning all not to make a mock of sin, & to fear & obey God. It further stated: Ryan Dunn is in hell!

In His wrath, God cut off his young man in the prime of his life, because he made a mock of sin and taught his fellow man to grievously sin against God! Dunn isn't mocking now! He's in torment. In comparison Ebert's 'jackass' comment looks like a lame duck.