Justin Bieber vs. Keyshawn Johnson — Intense Showdown at Singer's Mansion  —  At Singer's Mansion  —  EXCLUSIVE  —  Keyshawn Johnson chased down a speeding Justin Bieber this weekend — and tried to confront the singer about his dangerous driving habits — but JB ran away like a scared little child ... eyewitnesses tell TMZ.

IT LOOKS LIKE A SHATTERED BONG [PHOTO]  —  THIS could be the shattered bong Amanda Bynes allegedly threw out her 36th-floor apartment window last week.  —  Our TMZ producer went on the hunt today and found the shattered glass on the 3rd floor of the building ... it's a sub-roof that can be accessed by using a ladder.

Katy Perry, John Mayer Reunite, Flirt at Her Memorial Day Party  —  For Memorial Day 2013, Katy Perry kicked off summer with a few good friends — including John Mayer.  Two months after their second breakup, the “Shadow Days” troubadour, 35, was among the guests at Perry's brand …

Kelly Osbourne Is Our July Cover Girl!  —  It's not only Fashion Police - you have so much going on these days.  What do you want going forward?  —  “Happiness and a Golden Globe.  What?  I'm fabulous.  I need a Golden Globe.  What is life if you're not going to live it to the fullest?

Adam Levine Dating Nina Agdal After Behati Prinsloo Split  —  Credit: George Pimentel/WireImage; Denise Truscello/WireImage  —  Adam Levine really wants to “Love Somebody” — and that somebody happens to be Sports Illustrated supermodel Nina Agdal!  The Maroon 5 frontman and the brunette bombshell …

Dan Harmon Exploring Possible Return to ‘Community’  —  The former showrunner is in talks with studio Sony Pictures Television for a return to the cult comedy he created.  —  Dan Harmon may be heading back to Greendale.  —  The creator of NBC's Community is in talks with studio Sony Pictures Television …

Inside the Actors Studio Host James Lipton on His Favorite Interview and Pimping in Paris  —  More by Dotson  —  On May 29, Inside the Actors Studio — seen in 94 millions homes and in 125 foreign countries — celebrates its 250th episode with a special two-hour retrospective on Bravo.

Chief Keef ARRESTED for Speeding — 110 MILES PER HOUR!  —  ARRESTED FOR SPEEDING  —  110 in a 55!  —  BREAKING NEWS  —  Chief Keef was arrested for the SECOND TIME IN 7 DAYS yesterday ... when cops in Illinois say the 17-year-old rapper was doing 110mph ... in a 55 zone.

This Is What Happens When You Slap Beyonce's Ass At One Of Her Shows  —  There's a part in Beyonce's show where she goes up to some of the BumbleBeys in the front row and puts her mic to their mouths so they can spit out saliva while singing “Irreplaceable.”

TV Ratings: HBO's ‘Behind the Candelabra’ Premieres to Strong 2.4 Million Viewers  —  UPDATED: The Michael Douglas telepic about Liberace gives the network its best original movie ratings in nearly a decade.  —  A whopping 2.4 million viewers went Behind the Candelabra on HBO.

Britney Spears Wears a Bikini For a Weekend Getaway With Her Man  —  Britney Spears slipped into a bright blue bikini to spend the holiday weekend by the pool with her boyfriend, David Lucado, at a resort in Rancho Palos Verdes, CA.  On Sunday, the couple cooled off in the water before changing …

Kardashian Family — Sisters & Mom Dragged Into Porn Spoof  —  Into Porn Spoof  —  EXCLUSIVE  —  It's the closest thing to a Kardashian family sex tape you'll ever get ... a K-fam porn spoof — and everyone from Kim to Kris ... and even Khloe are getting the XXX treatment.