I got called for jury duty oooh...twenty years ago(UK). I was lucky, although I was called for two cases it didn't over run my two week stint. Apart from the actually case time, it was incredibly boring.

I would recommend a good supply of books to read,or something like knitting to keep you occupied while you're waiting to be called.

Whatever you do, if you're on a jury, don't be late. One of the blokes that was on a jury with me lived down in Kent (the court was in Wood Green - North London - a long way away for a morning commute). It was February and it snowed heavily over night. Fine in London, but half of Kent was snowed in including the bloke from the jury. Although he'd phoned the minute he realised he was snowed in and he only turned up twenty minute late (bloody good going if you ask me) the judge fined him £50. Because the bloke, understandably, objected, the judge then threw him in jail for the day for "contempt of court". It purely depends on the judge but...