I used to work above one and whilst I hate their coffee I used to frequent there regularly simply to skive off work. Their coffee tastes like mud, but then I suppose it was only 'ground' that morning, ho ho ho.
There was one good thing that came of it though, me and my mate 'found' a roll of Starbucks stickers on the counter with the logo on. So we took them and carefully coloured in parts of the 'B' with green felt tip so it read 'Starf*cks'. We stuck a few on the window outside and would stick one somewhere in the shop every so often. One stayed on their 'gift' display for 2 weeks!