More 'Glee'-ful news: A 'Dr. Horrible' reunion?

neil-patrick-harris-getty-320.jpgOK, the news flowing from "Glee" keeps getting better and better.

On the heels of news that the FOX show is courting Jennifer Lopez for a guest appearance later this season, there's word that "How I Met Your Mother" star Neil Patrick Harris may be next in line to show up in Lima, Ohio.

What's more, according to multiple reports, he may appear in the episode that Joss Whedon is directing toward the close of the season. A "Dr. Horrible" reunion on "Glee"? Our TV-geek brains just wrinkled a little.

There are still hurdles to be cleared before Harris makes it a done deal, chiefly CBS agreeing to let him appear on a rival network (he'll be a guest judge on "American Idol" next week, so that might not be a huge issue). "Glee" and "How I Met Your Mother" are produced by the same studio, 20th Century Fox.

"Glee" began production on its back nine episodes last week, and co-creator Ryan Murphy said Monday that he's meeting with Lopez soon about her guesting on the show. It returns to FOX on April 13.

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