This is the Discovery Channel's "Curiosity", Season 1 Episode 2, "Alien Invasion, Are We Ready?", released in 2011. In the pseudo-documentary, Humans first try launching nukes directly, with little effect, then launch several Operation Plumbbob style attacks at once, damaging the alien ship. The experts interviewed were David Bartell and Doug Beason. You can easily find it on dailymotion, but I can't link to it.
