General confusion or bewilderment:
* Confused
* Puzzled
* Perplexed
* Disoriented
* Nonplussed
* Mystified
* Baffled
Amusement or mild distraction:
* Amused
* Diverted
* Distracted
* Enchanted
* Intrigued
* Mesmerized
Slightly detached or amused:
* Amiable
* Whimsical
* Detached
* Dreamy
* Absentminded
* Dazed
The best synonym depends on the context of the sentence and the specific emotion you want to express.