We have 20 but typically get speeds around 10mbs - they cap it in the evenings 6-10pm I think. Doesn't make much difference to surfing the net tho.
Are you with Virgin Kate? I have to say I prefere their TV service to Sky now (NTL were awful but Virgin are getting there) I just love the on demand things

If you have it they have Disney things on there somewhere - showtime or something off the top of my head
I think there are some countries where 100 is normal

- somewhere in Asia and I think Sweeden have a good service.