I can't do the British accent very well at all. We watched a British ghost hunting show recently, on the Travel channel I think, and afterwards my husband and son went into an improv performance of a ghost hunting scene, British accent and all. I tried to join in, but was not very good at it, so I had to be the cameraman.

My son can also mimic the voice on our GPS "Turn left in 1.5 miles..." perfectly.

He has a lot of fun with it and combined with the sense of humor and improv ability he is fun to be around. It is just that sometimes it is too much of a good thing.