Talk about having the boss watching your work all the time. [artist id="988"]Green Day[/artist] singer Billie Joe Armstrong apparently had such a blast [article id="1649041"]appearing in "American Idiot,"[/article] the hit Broadway show based on his band's landmark punk-rock concept album, that he's agreed to take the stage again -- 50 more times, in fact.

According to an announcement on the show's website, after dropping in for a handful of turns as the character St. Jimmy, Armstrong will step into his Doc Martens again, beginning January 1 and running through February 27 at New York's St. James Theatre. The cameos will come in three stretches, from January 1-9, January 18-30 and February 10-27. The actor who originated the part on Broadway, Tony Vincent, will end his run as St. Jimmy on December 30.

The Tony-winning show based on the band's Grammy-winning 2004 album got a [article id="1649417"]box-office boost when Armstrong made his Broadway debut[/article] in September during eight performances. During that stretch, ticket sales grew to more than $1 million; last week's grosses were around $600,000.

You can expect tickets for the shows with Armstrong to be a bit harder to get. While the show has been playing to just over 50 percent capacity in recent weeks, The New York Times reported that it was boasting a nearly sold-out 93.4 percent capacity reading when Armstrong joined the cast.

Though St. Jimmy doesn't show up until midway through the show, when Armstrong burst onto the stage during his September and October slots, the audience went wild as he ripped into his theme song, "St. Jimmy," and mixed in the perfect combination of cocky, sneering attitude.

By night's end, he took his curtain calls with the rest of the cast and played guitar on the evening-ending "Good Riddance (Time of Your Life)," then came back out for a second bow and some hand-slapping with the patrons down front.

Will you check out Billie Joe on Broadway? Let us know in the comments!