Democratic Senator Barack Obama has been elected the first black president of the United States. The euphoric reaction to his victory has been just as palpable in the UK as it has been in the US. But he'll be leading the most powerful country in the world at an extraordinary difficult time, with serious decisions to be made on the economy, Iraq and Afghanistan, global warming and healthcare. What do you think should be top of the President's in-tray when he takes up his new post in January? Plus: Your questions on digital switchover answered. More than 50,000 households in south east Scotland had their analogue TV channels switched off at midnight, as the Scottish Borders became the first full region in the UK to make the switch to digital. John Askew from Digital UK answers your questions and addresses your concerns. Graham Stewart takes your calls, texts and emails.