Was this a kind of "best of" compilation they aired or an actually newly recorded show (with some old clips)?
The latter. There was a live broadcast, but they were mixed with pre-recorded interviews and old highlight clips; I think Arashi, for example, would be rehearsing for Kohaku Uta Gassen on Monday so they wouldn't have been able to attend the live broadcast.
I was just wondering what is the concept of Wow Wow War tonight? Because the song "chicken rice" was sub so I understand what it is all about but this one I cant find any eng sub so it hard to understand
They showed the interview in question towards the end but I think they interviewed Shinohara Ryoko (former colleague on Gottsu ee Kanji) on HEYx3, who was collaborating with Komuro Tetsuya for a single at the time and they were surprised at how well it was being received, making fun of her as usual. Komuro stated that he believed Shinohara could do well, which caused Hamada to believe that even he could get a song that could be a 'million seller' as he called it and Komuro responded that he would not refuse if he got the opportunity to collaborate with Hamada. From there, the idea probably got serious and it led to H jungle with t being formed.