We're with Neil Patrick Harris, Cobie Smulders and Josh Radnor on the set of How I Met Your Mother to get the skinny on the eighth season premiere episode and what they think about how this could possibly be the final season of the CBS hit! Video: Neil Patrick Harris Mimics LL Cool J 'We're such a family,' Neil tells ET. 'It's a remarkably happy environment, so if the season ends at eight, it would be hard to find a future job that equaled this one in pure happiness, I think.' Josh adds, 'The
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