useless trivia: What Word Means: A Genus Of Tuberous Rooted Vines, Such As Black Briony?

Questions

He played Latka Gravas (and his alter ego, Vic Ferrari)?

Her character once wrote a romance novel which even included cooking recipes?

In what movie did Ronald Reagan say "win one for the Gipper"?

What glass-jawed former heavyweight contender was once spoofed on The Simpsons?

Riker has a ..twin of sorts, what is his first name?