As part of a TV Guide cover story on an upcoming all-TV theme song edition of NBC's The Singing Bee, we want to ask you:

1. What is the best TV theme song ever?

2. What is the best TV theme song currently on prime time?

3. And what are the worst TV theme songs, both ever and currently?

Share your thoughts here, and then check back in the days ahead. This is but the first of many TV theme-song related TVGuide.com Asks... surveys to come!