In a 2004 BBC poll the public voted Only Fools and Horses, John Sullivan's long-running series about the trials and tribulations of stallholders Del and Rodney Trotter, as the greatest British sitcom of all time.

Since then, of course, there have been other successes: The Office managed to succeed where so many other British sitcoms have failed - it translated to the other side of the Atlantic. Admittedly, US television went on to make its own very successful version of The Office, but the original series also managed to acquire a following there.

American sitcoms such as Friends have always enjoyed worldwide success but more series such as the Australian Kath and Kim amd New Zealand comedy duo Flight of the Conchords have found international audiences and proved that comedy can sometimes travel far beyond its immediate audience.

Earlier this year, though, John Cleese - writer and star of Fawlty Towers, which is regarded by many as the greatest sitcom of all time - expressed the opinion that the Golden Age of British Comedy is over. Was he right?

Some might argue that more recent series such as Peep Show and the hugely successful Gavin and Stacey prove that there's life in the sitcom yet. But what do you think?

This week, we want to know:

• What's the best sitcom of all time?

• What are your favourite sitcom scenes?

• Which ones do you think don't work so well?

• What are the ingredients of a great sitcom?

• Do you think there are big differences between sitcoms that hail from different parts of the world? Does humour travel well?

• Do you think remakes are ever as good as, or better than, the original?

• Is there a formula for a successful sitcom?

• Do you think the Golden Age of Sitcom has passed?

• Do you think people still want to see sitcoms?