LONDON (Reuters Life!) - "The X Factor" winner Matt Cardle is cruising to the coveted Christmas No. 1 slot in the UK singles chart with "When We Collide", which has sold 170,000 copies in two days.

For 12 series (so far), The X Factor has produced an impressive amount of chart-topping hits, multi-million-selling albums and the odd novelty hit. But here we're looking at the best of the best, ...