DD1 and DD2 (4 and 3) both go upstairs and get pyjamas on themselves (assuming I have remembered to put the clean washing away), I usually go upstairs and supervise them brushing their teeth and then we have a story, which we all love.
I have to say that it doesn't look too far off before DD1 will be happy to do it all herself, but I do love our bedtimes.
Having said that, I was very ill the other week, awful flu, and DD1 took charge and told me to stay on the sofa whilst she got herself and DD2 into bed [proud smiley]