my 10 month old is the same way. He will sleep like the dead in our bed. But put him in his crib and its maybe 1 1/2 tops.
I guess I don't have any suggestions just an understanding ear. I'm at a loss what to do with him also. So I just give in. My ds1 was the same way but by the time he was about 18 months. There were some some not happy nights.
Abby-mama to two beautiful boys (12/09 and 3/12), and wife to my fabulous DH