Enthusisams and Energy, Skip Counting by 9's

My students have experienced so much fun and enjoyment through learning to skip count by different numbers.  This week they learned their 9's, and it is exciting to see a skill that could be difficult become a time of enthusiastic learning!  These skip counting experiences make multiplication facts much easier to learn or figure out!  Teachers, how do you use skip counting in your class?  Students, how is skip counting helping you be more successful in math class?