I recommend Infinite Stratos--yes, I just finished watching it.
If you can stand watching harem theme (male protagonist attracts most female characters) with talented male lead, and like cool girls fighting each others using machine stuffs--don't worry, their chests and heads are open, so it's not like gundamn--, then watch infinite stratos. They have many variant girls. ^^
The way they fight using the robot is pretty cool. They used combination of...
If you want to know, find it out yourself by watching it. ^^
Oh, I also recommend Gosick--no, this time, I haven't finished watching it.
Gosick is an investigative anime. Unlike detective conan, the detective is a like-able girl with small body/loli, and the male protagonist is a like-able dense guy (unless you despise dense guys). The first half of the cases are pretty boring and easy to guess, but the relation between the characters covers it up. And the opening song is amazing >__< The characters and the cases are gradually getting better. The anime isn't finished yet. There's like 1 or 2 more episodes. I'm not really sure, though. Try 2 episodes first! If you don't like it or feel the relation between the main characters is exasperating, then drop it unless you are some kind of masochist. xD