Celebrities on Twitter include a cast of ‘Heroes”

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Greg Grunberg twitters while on the set of ‘Heroes.’ Credit: Ken Hively / Los Angeles Times.

Some of the actors on NBC’s drama ‘Heroes’ are among those in Hollywood who may have the superpowers to help Twitter break into prime-time.

Greg Grunberg (@greggrunberg), who plays a Los Angeles cop with the ability to hear people’s thoughts, pulls out his iPhone nearly everywhere, including between takes on the studio lot, to tap out the short Twitter messages known as tweets. He broadcasts them to the more than 20,000 friends and fans following him on the micro-blogging service.

A tweet Grunberg sent Sunday morning about season three winding down -- ‘Tough to say goodbye to crew not knowing if any or all of us will return next year’ -- sent a cold chill through the show’s fandom. Within three minutes, their worried messages prompted him to clarify that the show ‘IS coming back’ for a fourth season, ‘but some crew take other jobs, so it’s tough.’

For the most part, glam -- not geek -- still rules show business. Twitter is on the front edge of Internet innovation that’s starting to change that. It allows users to send blurbs of as many as 140 characters to everyone in their network via text messages or the Web, and to sign up to follow people who interest them.

Grunberg isn’t the only Hero on Twitter. Brea Grant (@breagrant), who plays his romantic interest Daphne Millbrook, is there. So are James Kyson Lee (@jameskysonlee), who plays Ando; David H. Lawrence (@dhlawrencexvii), who played villain Eric Doyle; and even the show’s makeup artist and prop master.

‘It’s an official time-passer on the set,’ Grant said.

Read the full story for other twittering celebrities.

-- Jessica Guynn