Glen Campbell hit, the last word of which is this puzzle's theme

Question:

Answer:

WICHITALINEMAN

Length:

Similar Crossword Questions:

This puzzle's fairly obvious theme word
Word before the first word in this puzzle's theme answers
Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)
Word hidden in this puzzle's theme entries
Oxford American Dictionary's 2012 word of the year, and the key to this puzzle's theme
It can follow the last word of this puzzle's theme entries
Like this answer, or a two-word description of this puzzle's theme
This puzzle's theme word
Just making things up, or a synonym for a three-word phrase describing this puzzle's theme entries
Angle (and a three-word hint to this puzzle's theme)
This puzzle's obvious theme word
Theme word inside this puzzle's theme words
This puzzle's key theme word
Pithy sayings (four well-known ones containing the circled word are the keys to unlocking this puzzle's theme)
Word that has two diametrically opposed meanings (like this puzzle's eight theme entries)
Oklahoma Indian (and a three-word description of this puzzle's theme)
Like this puzzle's theme
Easy A (or where to learn about this puzzle's theme?)
TV/movie group associated with this puzzle's theme?
Bridge player's need, and hint to this puzzle's theme
Part of this puzzle's theme
Exceeds limits (or what each of this puzzle's theme items does?)
Today, to CaesarÂ—and a hint to the hidden word appearing in this puzzle 15 times (including the one in this answer)
Descriptor for this puzzle's theme
Valedictorian's pride, and a hint to this puzzle's theme