Another favorite (and of many others as well it seems, from the comments in my previous post) of mine, this episode had Bart finally earning a lot of respect for himself. Sure he went bald, but he also turned GAR. Hell this episode was even listed as one of the 30 most touching moments in mecha anime (spoilers in the link, Nicovideo account required to watch) by this guy over at Nicovideo.
I wholeheartedly agree with Ezra, Nirvana’s lasers are really a convenient weapon. Not only it’s homing, it’s also friendly-fire-proof!