I recently wrote an article on Creating Excel's Equivalent of MAXIF, in which I used an array formula to find the largest value from a list based on a given criteria. Reader Rob Brebbia read the first paragraph or two of my article, and set out to see if he could find a solution on his own. His research led him to a worksheet function in Excel that he and I had both forgotten about but that does allow you to carry out a "MAXIF" without using an array function. In homage to NPR's Car Talk, we present our first Excel Puzzler. Can you name the worksheet function that Rob found?