THIS JUST IN...

...from CBS Entertainment

  LOS ANGELES, Aug. 29 -- Neil Patrick Harris, star of the CBS comedy series "How I Met Your Mother" and an avid reality TV fan, will make a surprise visit to BIG BROTHER: ALL-STARS when he drops into the house for "Christmas in August," a prize the Houseguests won in Sunday's food competition.  Harris' guest appearance will be broadcast Tuesday, Aug. 29 (8:00-9:00 PM, ET) on the CBS Television Network. 

Photo will be available at http://www.cbspressexpress.com/.

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