Leslie Mann is a freaking delight. If you don't believe me, just watch any movie she's in and be amazed when you forget that any other people are even in it. Whether she's starring in "This Is 40," being a supporting character in "Knocked Up," or just popping up for five minutes in "The 40-Year-Old Virgin," she steals every scene.

These are the 16 times we couldn't get enough of Leslie Mann.