Parents: How do/did you get your toddlers to stay in bed at night?

[Chordata]

Have a 3 year old who's been in a "big girl" bed for nearly a year. Within the last 2 months, however, as soon as we put her down at night, she immediately gets up and comes out of her room.

Then we put her back, and she does it again. And again. And again. For hours. There's lots of hugging, kidding, crying, yelling, shaking of heads, "potty!" breaks, etc.

For those of you that have encountered this, how'd you get through it? What worked for you?

Yes, this forum is now my personal Parents Magazine forum.