If you read Head for Points on Saturday, you will know that one of our readers has won 1 million Clubcard points in an Amex competition. A few other people shared their experiences of winning things via HFP in the comments.
This competition on the Business Traveller website is worth a look, because it will not attract a huge number of entries. The prize is a return flight in Business Class on South African Airways to Johannesburg.
SAA business class seating is a lot better than you might expect, as you can see here, with fully flat beds:
You can fly up to the end of February 2015. If you won and wanted to visit Cape Town, remember that you can redeem Avios points for the Comair-operated flights from Johannesburg to Cape Town.