I sleepwalked a lot when I was a kid. Once my mom said I came in the livingroom with my bedspread over my head and said, "Trick-or-treat." When I was about 14 my dad and I used to go jogging together in the evenings. They said that one night I walked to the front door, opened it, said "Oh I forgot my tennis shoes," and went back to bed. I talk in my sleep too. I don't think I have sleepwalked in years but I do get night terrors. Some of them have been pretty mild but some have scared me half to death. During one of my last ones I thought I saw James standing over me in a threatening manner. He was actually asleep, until I whacked him really hard (to protect myself) and woke him up! Poor guy.
Not to scare you, but sleepwalking can be bad. I heard about one guy who sleepwalked and got on a train. My uncle dove out a second story window in his sleep. He landed on concrete but fortunately all he ended up with was a broken wrist.