Suzumiya Harushi no Yuuutsu (The melancholy of Suzumiya Haruhi) ED in comparison with the gundam parody vid. Yes there's one comparison up already, but it's using the OP for Episode 1, which the dancing vid is quite small. I figured I should do one with a better picture.
Music: ??????? Hare Hare Yukai
(Sunny Sunshiny Happy)
Baldr Force EXE intro. Song is "Face of Fact" by KOTOKO. This game is a bishoujo game/AVG/dating sim/eroge/h-game whatever you call it. You date the girls through a complexing and cool story and on the way, you get involved in adrenaline-pumping 2D Armored Core style mecha battles. Which means you get to customise weapons for different hit combos.
This is a high-quality version(in terms of video and audio). This is an OVA anime based on the eroge Baldr Force EXE. And Ayane's design has been changed to suck.