First of all, it's timely that there is a question here that relates to rugby union coverage, specifically because just this week we announced a significant autumn season of rugby on the BBC spanning BBC One, BBC Two, BBC Three, Radio 5 Live, BBC Sport Online and BBC Red Button.

All of the Wales and Scotland matches will be broadcast live, while there will be highlights of England's matches against Australia, Argentina and New Zealand.

This weekend I'm also delighted that we've got international rugby league back on the BBC when the England and Australia game is broadcast live - this being the first rugby league international on our network for nine years.

I really do believe that our rights portfolio is currently very strong and that the sports we've got on the BBC right now are extremely wide-ranging and do reflect a very healthy mix of fixtures and events. These include sports across the spectrum. For example: American football, athletics, badminton, basketball, bowls, cricket, darts, equestrianism, football, golf, gymnastics, horse racing, motor racing, motorcycling, road and track cycling, rowing, rugby league, rugby union, sailing, skiing, snooker, Summer Olympics, Paralympics, tennis, triathlon and, of course, the Winter Olympics.

In relation to the NFL query: we show and are showing the Superbowl final live and in the past we have indeed shown the Wembley NFL game as a simulcast broadcast with Sky. This year, though, we felt it was better value for licence fee payers if we showed this clash as a highlights package.

Sport on the BBC has a number of roles and it is not always to chase ratings but to provide coverage of mass popular sports as well as those that would not get the same exposure elsewhere. So while not every sport is to everyone's liking, we're attempting to attract a cross section of licence fee payers.

The Government's listed events review is currently ongoing and the results should be known by the end of the year, but you can look at our submission in full here, which should answer some of your questions.

As for the question about more details on specific events - a lot of these are still in the planning stages, but you will hear more about them as they start to be confirmed.

It has been an exhilarating few months for BBC Sport but also a challenging one with the planning of significant outputs such as the 2010 World Cup in South Africa, the 2012 London Olympic Games and the move to Salford all in the pipeline.

These challenges are being met in a sports broadcasting climate that is significantly evolving, with a number of major issues taking centre stage.

Today, in Westminster, I addressed a group of MPs and experts on one of the most emotive issues currently facing the industry - the government's review of listed events legislation.

For the BBC, the debate on the review is very simple.

Free-to-air listed events benefit audiences in a way that few other television events can manage. The arguments for protecting these events of major national resonance, such as the Olympics and Wimbledon, are as relevant today as they were when the system was first put in place.

In a diverse society and fragmenting media landscape, a big sporting moment is one of the few places where people can come together and unite. Major sporting events available on a universal, free-to-air basis must continue to be a cornerstone of our public service broadcasting system and are arguably more important than ever.

And we know that audiences agree.

Research has also told us that there are a core group of fans who are willing to pay to watch sport on television, but that leaves millions who only watch sport on free-to-air-channels. A significant majority of viewers would be lost to sport if they had to pay for it and in that context I believe that making major changes to the current listing structure would irreparably damage the cultural fabric of the UK.

We want to maintain access to sport for people who don't want to pay subscriptions; and, even more crucially, we see it as a public service commitment to help bring different and less mainstream sports to our mass-audience channels.

So with that, I'd like to move on to talking about all of the other things BBC Sport has on its plate at the moment.

In 2008 the BBC broadcast 1,077 hours of sport on terrestrial TV and 3,500 on our interactive services. On radio we broadcast 4,300 hours of output on 5 Live and 5 Live Sports Extra. We currently show a total of around 57 varieties of sport a year. We are also in the throes of a revolution in the way in which audiences expect their content delivered. Alongside television, that means online, mobile and red button services playing an important role in delivering our content as the national broadcaster.

As we are currently focused on events such as the Vancouver Winter Olympics in February 2010, next year's Football World Cup in South Africa and of course London 2012 - the most important planned event in the UK in our lifetimes and the biggest challenge ever to face BBC Sport - cross-platform services are crucial for all broadcasters in order to fully serve audience demands.

But there is another serious issue which I feel the BBC can play a role in and it is one that is affecting the future of this nation's health.

The British Heart Foundation has recently released research which shows that just one in eight children benefits from the recommended amount of daily exercise.

Their study concluded that more than two-thirds of all British children will suffer from obesity by 2050.

This is a pressing and serious issue and both individuals and organisations can play an important role. Families, of course, are crucial in this, but government, schools and councils have an important part to play too.

Ipsos MORI research indicates that watching live sport on TV can genuinely promote interest in sport, with 43% of UK adults saying that they have become more interested in sport as a result of watching it on TV, and for those who never participate in sport the result is 29%.

But the BBC as the national broadcaster can also have an important role here.

The power of high-quality sports broadcasting can be a powerful tool in inspiring young people to take up sport and increase participation across the country.