Resize Tip of the Weekend
This one happened by accident! Have you ever been working in a program on your Mac that has multiple columns you can sort by (like Mail, iTunes, etc.?) Sometimes you'll encounter data in one of these columns that is WAY too long for the width you have set for that column. For example, someone sends you an email where the subject contains more data than most people put in the entire message.
For example, check out this iTunes store list.
Notice how the album column isn't wide enough for the content? I used to DRAG the column header over to resize, and then I discovered, accidentally, that double clicking on the column header (directly between the columns) will elongate (I hate that word) the column to fit the content! It's amazing--give it a try!