As expected there are insane amounts of comments for Gundam 00 and Code Geass, but peeps have also mentioned Wallflower, Gundam Seed, Gundam Wing, Nodame Cantabille, Inuyasha, Soul Eater, DOGS, D.Gray-Man, Viewfinder, Hitman Reborn, Ouran, Gurren Lagann and Skip Beat...
SO MUCH POSSIBLE SHINY *_*
I suggested Soul Eater as well, Oofuri, XXXholic (Watanuki \o/), Eyeshield21 (NEED a Hiruma icon >_<) and Totally Captivated (*_*) and stock icons.
Seeing Gundam Wing in the comments made me realise it's been frickin' forever since I saw a Duo or/and Heero icon in an icon post O_O Especially considering the sheer volume of fanart et all for the fandom.
While some peeps will prob never get enough of Gundam 00 and Code Geass icons, wish there was focus on the older/smaller anime fandoms too >_>