The last one is
Genshiken... Ohno was her name, I think...
I've seen the second picture on konachan.com recently... I'll try go through my history and see if the tags reveal any more info.
EDIT: Ran into a snag... the images didn't have any tags attached to them... so here's simply a link to a larger version of that picture aswell as a night time version.
http://konachan.com/post/show/54173/tagme
http://konachan.com/post/show/54172/tagme