A fairly recent manga called 'Radio Heads' by Mukoura Hirokazu.
Genre: Comedy, School Life, Sci-fi, Seinen (and judging by how it seems to be going, definitely ecchi)
Plot: Basically, a school robot club is headed by a guy who's got a major crush on the club advisor. He ends up building a robot (torso up only, so far, and not sentient, so don't expect too much) that resembles her and, as they say, Bob's your uncle. Not the best summary, but that's just the main points. Very good art style, and the comedy makes this pretty pleasant to read throughout.
2 Chapters out so far: http://www.batoto.net/comic/_/comics/radio-heads-r3531
Enjoy.
