Here are 3 m-ATX socket 1155 mobos available from Newegg who's chipsets (H67 and Z68) allows for overclocking:
Intel BOXDP67DEB3 LGA 1155 Intel P67 - $110http://www.newegg.com/Product/Product.aspx?Item=N82E16813121512
Based on user reviews it is very stable, but it has limited overclocking potential.
ASRock Z68M/USB3 LGA 1155 Intel Z68 - $85http://www.newegg.com/Product/Product.aspx?Item=N82E16813157270
It has only 4 reviews and they are mixed reviews.
ASRock Z68 PRO3-M LGA 1155 Intel Z68 - $110http://www.newegg.com/Product/Product.aspx?Item=N82E16813157252
It has the most reviews of the 3 mobos, and is generally well accepted.