BBC One promotes its highlight of the day as 'The One to Watch'.

Standard trailers have the BBC ONE logo centred on screen throughout, and finish with the circular endboards. This trailer for 'Spooks' had the final animation altered so the circular pattern originated off its usual centre point - and looks better for it.

New technology is very important to the BBC so it's no surprise to see the BBC iPlayer being pushed on trailers.

Also, the BBC HD channel is promoted for all the BBC's high-definition programmes.

One for EastEnders.

Many programmes have specially adapted trailers - but keeping to the same theme. Here's the trailer for 'Robin Hood'.

This trailer was for the drama 'Jekyll'.

'Life in Cold Blood' trailer.

And this for the Saturday night drama 'Merlin'.

A trailer for 'Bonekickers' has an adapted logo for BBC ONE.

Trailer for the drama series 'Ashes to Ashes'.