Eucliwood (Kore wa Zombie) - Awesome awesome awesome. I just hate how she seems so sad all the time D: (Which is why the last two eps were awesome)
Ikaros (SnO) - Pretty much same thing as Eu, but seeing her happy is even more rare
Suzumiya Haruhi (Suzumiya Haruhi) - She's tsundere and awesome. Really active and seemingly uninterested in anything but doing stupid stuff, but her feelings can been seen throughout the series' and movie. AND she does look damn good in a ponytail.
Lala (TLR) - She might be an idiot but she's pretty damn good looking and desperate to get Rito to love her back. She's determined and motivated, so she's awesome.
Shiina Mayuri (S;G) - Normally I don't like airheaded characters, but Hanazawa Kana voices her and she is pretty damn kawaii all the time, so she's awesome
Ika Musume (Ika Musume) - She's pretty funny ~de geso
Hakase (Nichijou) - Always plotting and doing stuff for teh lulz. I loved the scene where she screws up and draws glasses on Nano's little guy, as well as every scene where she does something wrong (like the glue or when she eats all the snacks)
Sugisaki Ken (thanks nana for reminding me) (Seitokai no Ichizon) - LOL. Total baller and not at all an idiot.
Aisaka Taiga (Toradora) - Tsundere is cool and so is she.
Masa-San (SnH) - He took his first kiss.
Erio (Denpa Onna) - She's cute as hell and shy, which is awesome.
Lara Bodewig (IS) - Pretty much the best character in IS, the only one except for maybe Char who isn't afraid to actually get something done in that show.