About Lewis & Clark, there is a comedy movie with Matthew Perry and Chris Farley, where they try to reach the pacific before Lewis & Clark, and there is (of course) a Simpsons episode, one of those 3-historical-stories-episode, that tells the story of Lewis & Clark, including Milhouse getting scalped.

So, there is a chance that you could know who these two were, i'm btw. german and definitely not in any way an expert in american history!
And those who don't know Bill & Ted, you guys make me feel old. Go and watch one of the best youngster movie from the late 80s, and the (still good, but not as good as the first one) sequel from 1991.
Or watch the cartoon or look into finding an older Marvel comic series with BIll & Ted (according to Wikipedia, there was one).
Good battle, nice to see Rhett and Link again, i enjoy the battles with them. They almost seem like regulars for the battles.