Of all the typing programs I have shown my two kids both prefer this one:
http://typingclub.com/It's really simple, basic and clean, no games, no fun, no fuss. They both found the BBC one too, erm, something, noisy, distracting, I am not sure what, but they weren't into it. They are both happy to get onto typing club, do their thing and move on.
10 mins a day has been astonishingly effective for my 10yr old (ADHD-i, CAPD, dyslexia, sensory issues and borderline for Aspergers). 10 mins a day has resulted in much slower progress for my 6yr old (DYS IQ, no other diagnosed Es, excellent sensory integration but extremely hypermobile, hands/thumbs in particular, expected to be onto fulltime computer use by 3rd grade at the latest). It's been interesting to see the extent to which age really does impact them, because the younger one is in all ways higher ability and better integrated for age.
