Haha, I can’t say I’m too surprised Nakamura was called to be guest. Especially after the episode with Sugita back in May. XD
For those who don’t know Nakamura Yuuichi (中村 悠一 — not to be mistaken with the actor with the same romanization 中村 優一), he is a seiyuu under the same firm as Nana-san, Sigma Seven. For those Mizuki Nana fans who watch every single anime she ever appears in, you will probably recognize Nakamura as Vice (from Mahou Shoujo Lyrical Nanoha StrikerS) and Tsukiyomi Ikuto (From Shugo Chara).
From the more recent hit anime, he is also Graham Aker (Gundam 00 — if you could consider that recent XD), Saotome Alto (Macross Frontier), Hodr (Break Blade) and… If you’ve already listened to World of M, Kousaka Kyousuke (Oreimo). The background music when Nakamura was making his “introduction” is the opening for Oreimo and the “character” he is speaking as is Kyousuke. Oreimo is a hilarious and overall very enjoyable anime for those of you who haven’t watched it yet.