Yeah, I'd have to agree that "popular" might not be the best word to use here. Anyway, I'd have to go with Dahmer, Jack the Ripper, Ted Bundy, John Wayne Gacy, Ed Gein, the Zodiac Killer, Boston Strangler, BTK, and the Green River Killer. Jack may be the most infamous, and I'd place Dahmer second.
I met Ted Bundy just hours before he was arrested in Pensacola! My friend & I had drinks with him! He was soo nice and good looking! He asked me to go for a ride with him but luckily, I had to take my friend home! She called me crying the next morning & said turn on your TV! I was shocked! He was such a gentleman at the club!