Chris Harrison's 10 Most Memorable Moments From 10 Years of The BachelorThe host recalls on- and off-screen memories from 10 years of roses, romance and rejection

1. PAGING THE PARAMEDICS

On The Bachelor's first season in spring 2002, contestant Rhonda Rittenhouse became overwhelmed and began hyperventilating. "I remember being in the control room and all of a sudden, we just heard what sounded like a cat being strangled," Harrison tells PEOPLE. "The paramedics came, and we shot it and we rolled on it. Now that's commonplace, but that was the first-ever reality TV moment with an ambulance."