This one really surprised me. Going into Frequency, I had no idea that filmmakers today can still deal with the treacherous issue of time travel in a manner that doesn't insult my intelligence. This is a well written, well crafted story based on a premise that is theoretically possible. There were scenes where I actually had a chill run down my spine. It's not perfect (there's no clear explanation as to how the killer arrived in the hospital bed in 1969 where he was supposed to have died, and I had a serious problem with the fake NY accents from the get-go), but overall it works and it works amazingly well. Probably one of the 2 or 3 best films of 2000.