The answers to the clues below each contain an unusual, repetitive  pattern. The patten is different for each clue.

1. Through thick and thin
2. Various things
3. Initiates a conflict
4. Elocution phrase
5. Arguably the greatest movie musical ever

Answers:

1. For better or for worse - fOR better OR fOR wORse
2. This that and the other - THis THat and THe oTHer
3. Casts the first stone - caSTS The firST STone
4. How now brown cow - hOW nOW brOWn cOW
5. "Singin' In The Rain" sINgIN IN the raIN

Credit: NY Times Crossword - June 23, 2013
Patrick Berry
TWO-BY-FOURS