fascinated — to attract and hold attentively by a unique power, personal charm, unusual nature, or some other special quality; enthrall: a vivacity that fascinated the audience.
engrossed — Having all one's attention or interest absorbed by someone or something.
gripped — the act of grasping; a seizing and holding fast; firm grasp.
captivated — Simple past tense and past participle of captivate.
absorbed — If you are absorbed in something or someone, you are very interested in them and they take up all your attention and energy.
charmed — A charmed place, time, or situation is one that is very beautiful or pleasant, and seems slightly separate from the real world or real life.
enchanted — Simple past tense and past participle of enchant.