And in this one, in which Sarah, intentionally or unintentionally, uses puppy dog eyes to make the principal allow her to wear a beret. In this one, Sarah does it to show off her general cuteness... err... that is, distract Susan... Yes.
Susan has finally used them too...inadvertently, when she learns that Justin doesn't have a version of her on his bridge crew in the Star Trek Online game. She's so surprised when told she's doing it that she feels her face to confirm it.
Grace managed to "convince" Ellen and Nanase to agree on a double date with her and Tedd.
Para Ventura doesthis too, though it doesn't always help.
Jyrras Gianna of Dan and Mab's Furry Adventures generally employs these, helped in part by being the same age yet half the size of most of the cast. Lampshaded twice, in one strip where the other character is immune and in another where they are used on him. (Prompting a bemused "That's my gimmick!" when he recovers)