I'm a frequent sleep talker, I must sleep talk 3 or 4 times a week based on what my family have told me. My sister has even managed to record audio of me sleep talking on a few occasions and it is freaky!
The latest one was recorded at 11pm and, seeing as I got to bed at 7pm and wake up at 3am, I was definitely asleep.
The thing that gets me though, is that my speech is so clear! I am speaking as I would during a normal daytime conversation; you can understand every single word and the sentences all make sense. I tend to have conversations with other people as you can hear that I'm 'replying' to someone.
Freaks me out!