"Due Date" isn't expected in theaters until tomorrow, but already some celebs are raving about the buddy comedy starring Robert Downey Jr. and Zach Galifianakis. Earlier in the week, musician Rob Thomas attended the premiere, and today he told followers, "RDJ and ZG in DUE DATE, great pair. But RDJ in anything, I mean, come on." Rocker Mark Hoppus checked out the flick, as well, tweeting, ""due date" made me laugh till my face fell off. totally true story, except the face-falling-off part."
Of course, "Due Date" will have some competition at the box office this weekend as it faces off against the animated 3-D film "Megamind." That movie held its premiere in New York City last night, and star Brad Pitt (pictured) was in attendance! Actress Melissa Joan Hart desperately wanted to get a glimpse of the live-action Brad at the screening, as she posted, "Was hoping for my first Brad Pitt sighting last night but he just waved in the back of the theatre in the dark. Oh well!" Colton Haynes still managed to have a mega good time and wrote, "Had a blast... at the megamind premiere, junk food and our fake tattoos...fun movie."
Check out the rest of Thursday's best celebrity tweets, including birthday wishes for P. Diddy and Jamie Campbell Bower's countdown to "Breaking Dawn"! Follow us @hollywoodcrush to get even more celebrity and pop culture news around the clock!
@jamiebower Can't tell you how excited I am to begin filming my bits for Breaking Dawn.
-Jamie Campbell Bower, Actor ("Breaking Dawn")
@trinarockstarr Happy Birthday @iamdiddy so much GREATNESS!!!! Live It Up!!!! xo 
-Trina, Singer
@ryanseacrest Weird. @ConanOBrien is much shorter in person. http://yfrog.com/2sh4wj
-Ryan Seacrest, TV and Radio Host ("American Idol")
@mindykaling All my napkins are from Subway and Whole Foods. IM AN ENVIRONMENTALIST
-Mindy Kaling, Actress, Writer ("The Office")
@robkardashian Thanksgiving and Christmas are coming up. Need to start looking for a girlfriend.
-Rob Kardashian, Reality Star ("Keeping Up With the Kardashians")
@julieplec Just started crying within the first two minutes of Friday Night Lights.
-Julie Plec, Writer, Producer ("The Vampire Diaries")
@misskellyo it really is a diss in Hwood to wear a dress someone else has already worn because then you get compared it sucks AND i never win lol!!
-Kelly Osbourne, Reality Star ("Dancing With the Stars")
@druiddude dear unknown neighbor, while you do have a great DJ @ that party u r having, the music is insanely loud & i have sectionals n the morning.
-Kevin McHale, Actor ("Glee")
** Hollywood Crush Twitter