A book shelf speaker to go on a bookshelf.

I had asked the same thing here myself just a few weeks ago, then answered my own question and went with a pair of Aeriel 5b's.
Aeriel's website recommends them for close to wall applications and I'm quite happy with them. (Some day they will become rear speaker for HT.)

I'm using a NAD 7175 (75 wpc) and it plays plenty loud in my 12x20 room, long wall placement, even though the are only 85db sensitive. They are 4 ohm BTW.
From Aerial's page, "Tonal balance remains good even when placed on shelves or wall mounted." I think wall placement helps out the bass.