OK..I know this is a fairly boring topic, but my wife and I are curious as to when other parents out there made the transition and how it went. Our little one (21 months) once in a while will be in his crib with his leg up on the railing. He doesn't try too often, but I can just imagine hearing him as he thuds on the carpet one day. Several of our friends have had their kids climb partially out and then fall...maybe it's a learning process. How/when did you do it? I can't imagine how we're going to get him to stay in a toddler bed when he can just get out of bed...that should be interesting.