This week's sample Secret Theme rounds

Each group of 10 otherwise unrelated tough questions has a theme running through its answers. Can you answer the questions and figure out the themes? Answers will be posted early next week.

Dirty Frank's:

I asked a few questions of local interest this week.

1) What African nation has the capital Yamassoukro?
2) What was the name of the White House cat during the Clinton presidency?
3) What was the name of Kevin Arnold's garage band on The Wonder Years?
4) What bassist for James Brown and later Parliament/Funkadelic is largely credited with the creation of the funk sound?
5) What donut-shaped region on the outskirts of our solar system produces most of the comets which pass Earth?
6) What's the name of David Letterman's production company?
7) What local hoagie chain supplies prizes for local sports talk radio station WIP?
8) In the movie This Is... Spinal Tap, what album has a cover offensive to women?
9) What player did Philadelphia Phillies manager Dallas Green say was the toughest athlete to play for him in a list of ten he put together recently?
10) In what suburban Philadelphia town will you find the Philadelphia Athletics Museum?

... and what theme links the ten answers?

Drinker's Tavern:

1) What did Dmitri Mendeleev create in 1869?
2) What groundbreaking 1920 German Expressionist film was directed by Robert Wiene?
3) What Canadian kids' show has been carried on PBS stations since 1994?
4) What empire existed from 1299-1922 in parts of Asia, Europe and Africa?
5) In what 1998 movie did Carrot Top play a surfer/inventor who inherits a billion dollars?
6) What section of the US Department of the Treasury makes paper money?
7) What 1951 live-action Disney movie featured Ronald Reagan and a chimpanzee?
8) What Quad Cities burg is the fourth-largest city in Iowa?
9) What magazine literally and figuratively revealed a lot of Lindsay Lohan in a January 2006 story about her drug and alcohol use featuring a skimpy bikini cover shot?
10) What 1957 Katherine Hepburn/Spencer Tracy romantic comedy featured the pair at odds over a TV marketing department's installation of a computer?

... and what theme links the ten answers?