The Tiffany Diamond is also one of my pet topics.

Aaaah yes, a pet topic of mine - where the term liberal is a pejorative while conservative means anything but:

His pet topics are the Byzantine Empire and the Crusades.

Though it was one of her pet topics during her first gubernatorial campaign, it proved politically unpopular.

This led Mr. Rosenberg to another of his pet topics: the need to educate young people to appreciate art.

But on the host's pet topics, like health care or John McCain, the listeners were much more conservative than other Republicans.

He was indulging in his pet topic.

And as usual, Emily keeps interrupting everyone's comments, while Robert wants to direct the discussion to his pet topic of improving office technology.

A theorist to the core, he always harps on his pet topics of poverty and developmental issues that concern the developing world.

Scientists do tend to become enthusiastic about their pet topics,' Hrrestan said.