As Aidyn is a fair bit older now (17 months) he doesnt wake up too often, but occasionally does get 'Night terrors'. A cuddle, and sometimes a lullaby too, is usually all he needs to get back to sleep.
When he was younger though, if he woke up and was upset during the night I would bring him into our bed with us and he would spend the rest of the night co-sleeping soundly between us.