Who's Neil Patrick Harris Gonna Call for 'Best Time Ever' Halloween Episode? Ray Parker Jr.

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Neil Patrick Harris photograhed on February 3, 2014 in New York City. 

Neil Patrick Harris is getting into the Halloween spirit on the Tuesday's episode of Best Time Ever with special guests Kelly Ripa and Ray Parker, Jr.

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The LIVE with Kelly and Michael host Ripa will be on as the celebrity guest announcer, guiding viewers through the Halloween-themed episode. Meanwhile, Parker will headline "Singalong Live" with the chart-topping Academy Award-nominated Ghostbusters theme song, giving three home viewers the chance to win $1,000 in a karaoke contest. 

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As well, the "Neil Versus" segment will return with a new challenge for the host that pits Harris and his child lookee-likee Little NPH against his sidekick Nicole Scherzinger and "Little Nicole" in a game moderated by Meredith Vieira.

Best Time Ever with Neil Patrick Harris airs Tuesdays at 8 p.m. on NBC. Until then, couldn't hurt to give yourself a refresher on Parker's "Ghostbusters":