For those who didn't know, Taniguchi is voiced by Shiraishi Minoru, who is the guy from the lucky start credits - both the live-action one singing, and the character from Lucky Channel.
No, it's sure. it's "Night of Nights" from BeatMario, itself a remix of "Flowering Night" from the videogame "Phantasmagoria of Flower View", an episode of the independant game saga "Touhou Project" by ZUN. Every geeks in Japan are fan of this saga. It is a true phenomenon.
@assrape1942 the first one is Suzumiya Haruhi no Yuutsu and the second it's Lucky Star.. tho they're more scenes of Haruhi xD the ones with the dude on a rock and that are from Lucky Star as well n_n
@LoveN64AndGCGanes Well if my memory serves me correctly from the old zelda cartoon where links says to zelda WELLL EXCUuuuuse me princess i knew where it was from ~_~