General excitement:
* Excited
* Delighted
* Elated
* Jubilant
* Overjoyed
* Ecstatic
Stronger feelings:
* Rapturous
* Euphoric
* Enraptured
* Transported
More specific synonyms:
* Excited: If the feeling is primarily anticipation or energy.
* Delighted: If the feeling is more about pleasure and enjoyment.
* Elated: If the feeling is about a sense of triumph or accomplishment.
* Jubilant: If the feeling is about joyous celebration.
* Overjoyed: If the feeling is overwhelming and intense.
The best synonym depends on the specific situation and the nuance you want to convey.