It would be useful to sort a column so that differences appear first (or last). This could be done through a right click on the column headers and selecting the type of sort to perform.

When comparing dataset with a large number of different rows (in my case 150k) where one column may having only 1 row that's different its next to impossible to find that row. Using the mouse to drag the scroller skips too much to be useful and paging down takes FOREVER.