This puzzle appeared in Microsoft Puzzle Hunt 19, whose theme was TV.
That event was modular in that each author wrote a module consisting of a few
puzzles and a metapuzzle.
The theme of my module was Saturday Night Live.
For each leg of the road trip, figure out what TV show it's cluing with one phoneme changed.
The 19 changed phonemes are (in some order) the ones in the six words at the bottom of page 2.