This year marks the 25th anniversary of a few Unsolved Mysteries cases. The dates next to the names are the dates when the disappearances/murders/offenses happened, not when they aired on TV. Let me know if I missed anybody.

Mike Emert (murdered, January 4, 2001)
Samantha Kibalo (missing, February 3, 2001)
Robert Fisher (wanted for murdering his wife and two children, April 10, 2001)
Eric Tamiyasu (murdered, June 25, 2001)
Niqui McCown (missing, July 22, 2001)
Sneha Philip (missing, September 10-11, 2001)
Cindy Song (missing, November 1, 2001)

Sneha Anne Philip is the obvious one.

Thanks for compiling these every year! Mike Emert is another one from 2001 (thankfully solved, unlike all the others on this list :()

Added both