I think Heaven wouldn't be heaven unless there existed the same commonality and communication we have here. Thus, we will be able to see our families, and recognize them, and be with them. I also think God isn't going to have us singing praises all day long; what's the point in that? Surely God doesn't need it--singing praises to Him here is for our benefit. No, God has a plan for us, and work for us to do. I wouldn't be a bit surprised if we are pretty busy, actually.