WordNet sense 1 (rousing or quickening activity or the senses):

stimulating

WordNet sense 2 (extremely exciting as if by alcohol or a narcotic):

intoxicating

WordNet sense 3 (causing a surge of emotion or excitement):

thrilling

WordNet sense 4 (affected by emotion as if by electricity; thrilling):

electric

WordNet sense 5 (tending to cause suspension of regular breathing):

breathtaking