US Weekly's Annual Hot Hollywood Style Issue Party draws Chrissy Teigen, Kendra Wilkinson and James Van Der Beek; John Mayer, Flavor Flav, Dave Grohl and others perform and party at the 28th Annual Rock and Roll Hall of Fame Inductee Ceremony; Emily Blunt and Colin Firth premiere Arthur Newman then head to the after party with John Krasinski and others; Jesse Metcalfe and Josh Duhamel make waves at the Planet Ocean premiere party; Liberty Ross, Pixie Geldoof and Louise get some new sunnies at the Foundry and House Of Holland Eyewear Launch—take a gander at the grandeur of Thursday in your thank-god-it's-almost-the-weekend edition of Last Night's Parties!

"Jimmy Kimmel Live" went all out last night when it took over the usually gridlocked, tourist-ridden section of Hollywood Boulevard at Highland to put on a concert worthy of rock history. If you weren't one of the 10,000 or so in the audience flooding the blocked off street, you may be wondering exactly who has the clout to shut down one of Los Angeles' most trafficked intersections to stage a free show. That would be the one and only Dave Grohl, who brought an all-star troupe of rock musicians like John Fogerty, fellow Foo Fighter Taylor Hawkins, and Nirvana bandmate Krist Novoselic on stage for the Hollywood Boulevard blowout.

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It was raining rock stars in Hollywood for the premiere of living legend and all-around cool dude Dave Grohl's Sound City: Real to Reel, a documentary on the storied Sound City recording studio in Van Nuys. From Stevie Nicks to Joan Jett and John Fogerty, see who else joined the Nirvana and Foo Fighters rocker for a first look at his directorial debut, followed by the all-star Sound City Players concert at the Palladium Thursday night.

Christina Applegate attends the premiere event for Kumpania: Flamenco Los Angeles at El Cid; Stevie Nicks, Dave Grohl, Joan Jett and other rock legends play an all-star concert in honor of the Sound City premiere; Bruce Willis and daughter Rumer Willis step out for a mural unveiling to commemorate 25 years of Die Hard; Dr. Dre, Kevin Connolly, Rosanna Arquette and many more hit the RivaBella Ristorante grand opening; Joaquin Phoenix and Paul Thomas Anderson help honor Amy Adams at the Santa Barbara International Film Festival—get your final rundown of the week on who was out on the town Thursday night in this installment of Last Night's Parties.

Sundance 2013 kicked off this weekend, and film buffs flocked to Park City again this year. From Dave Groh's sold-out concert at Park City Live with Stevie Nicks, to Jessica Biel and Ringo Starr hanging out at The Westway, to Avicii and Matisyahu's blow out performances, here is a round up of some of the top bashes from Sundance's first weekend.