It's good to have famous friends in Hollywood, if only so you can call on them to help with whatever charity organization you care about. That's what "Desperate Housewives" star Eva Longoria Parker has been doing for the past two days, at least. Just today, "Dexter"'s Julie Benz, "Dollhouse"'s Eliza Dushku (and her bf, new "Dancing with the Stars" contestant Rick Fox!) and "House"'s Olivia Wilde and Jennifer Morrison joined Eva's organization TwitChange to help raise money for Haiti relief. Those yet to respond? The cast of "Glee," who Eva tweeted, "Hey @msleamichele @msamberpriley @IJennaUsh @chriscolfer I would LOVE to have you all on board our charity auction @ http://TwitChange.com." Jenna Ushkowitz, Harry Shum and Kevin McHale already agreed, so now the rest of them definitely can't refuse!
Meanwhile, a second oil rig explosion in the Gulf caused outrage from some other television stars. "This is like a bad dream...Offshore Oil Rig in the Gulf of Mexico Explodes http://nyti.ms/bq5mIX Please help fundraise! http://bit.ly/9ML8RT," tweeted "One Tree Hill" star Sophia Bush. "Charmed" star Alyssa Milano seconded that, tweeting, "No. No. Gulf oil platform explodes, burning off Louisiana coast." We should also note that Alyssa already joined TwitChange for Eva. She's just an all around good Samaritan!
Check out the best of the rest of Thursday's celebrity tweets to see who celebrated 90210 Day and which "Twilight" actor confirmed their return for "Breaking Dawn: Part 1!" Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@michaelwelchact It looks like I will be back for Part 1! WooHOOO!! Part 2, I'm not sure yet.
-Michael Welch, Actor ("The Twilight Saga: Eclipse")
@jenniegarth Hey! Today is September 9, 2010. 90210! Love to the original cast and crew. And the new kids too.
-Jennie Garth, Actress ("Beverly Hills 90210")
@ryanseacrest In honor of #90210day, I present u with my cameo on "90210" from a decade ago! http://bit.ly/bOQyEL
-Ryan Seacrest, Radio Host, "American Idol" Host
@peterfacinelli Today is 09.02.10 ... Congrats @jenniegarth http://tinyurl.com/29saoxd
-Peter Facinelli, Actor ("The Twilight Saga: Eclipse")
@tinselkorey This Saturday @thealexmeraz ,Julia Jones & I will be @VanityLV nightclub in Las Vegas. Come celebrate September with us! 
-Tinsel Korey, Actress ("The Twilight Saga: Eclipse")
@yelyahwilliams Headed down to help finish painting a house with Habitat for Humanity! Wearing my new moshy shorts courtesy of The Wonder Years. So breezy.
-Hayley Williams, Singer
@pattonoswalt The mom from KARATE KID is Don Draper's secretary, rendering my latest fan fiction obsolete.
-Patton Oswalt, Stand-Up Comedian, Actor ("Ratatouille")
@itsthesituation i know everyone will be tuning in 2night! catch the madness! Reality King is coming at u soon with DWTS! luv u all! #GTL all day everyday!
-Mike "The Situation" Sorrentino, Reality Television Star ("Jersey Shore")
@spencerpratt Rapper T.I. arrested for Ecstasy. "Ecstasy?" he said, "Paris Hilton told me it was gum!"
-Spencer Pratt, Actor ("The Hills")
@nickjonas Doing some press for CR2! I'm getting so pumped!
-Nick Jonas, Musician
** Hollywood Crush Twitter