New figures show a surge in the numbers of people using the internet to watch unauthorised copies of television programmes.
While American drama series are the most popular, millions of people are also downloading the British programme Top Gear.
Visits to web sites offering illegal access to music and video have nearly doubled over the last year, and increasingly it's television and films which are being sought out.
The media measurement firm Big Champagne has compiled a top ten of illegal downloads. It's dominated by American drama series, with 55 million people downloading episodes of Heroes in the first half of this year. But the BBC's Top Gear is also amongst the most pirated programmes, with hundreds of thousands of people, many in the United States, downloading each episode of the recent series.
Despite the apparent surge in piracy, the researchers say television should not suffer as much damage to its revenues as the music business has faced.
Rory Cellan-Jones, BBC News
kullanıcılarına yasalara aykırı şekilde ücret ödemeden bir ürünü indirme imkanı sunmanearly doubled
neredeyse iki katına çıkansought out
buradaki anlamı, program indirmek için aramak, aratmakcompiled
toplamak, bir araya getirmekit's dominated by
burada, çoğunluğu alan yasadışı programlaramongst the most pirated programmes
en fazla korsan kopyası yapılan ve internetten indirilenthe apparent surge in
aniden artmış gibi görünensuffer as much damage to its revenues
kazancından fazla büyük bir kayba uğramakfaced
uğraşmak zorunda kalmak