Because when you're researching something sometimes you just are reminded of some amazing WNBA moments. From the WNBA.com history page:

Triple-doubles during the regular season
Sheryl Swoopes Houston Comets v. Det 7/27/99
14 points, 15 rebounds, 10 assists

Margo Dydek Utah Starzz v, Orlando 6/7/01
12 points, 11 rebounds, 10 blocks

Lisa Leslie Los Angeles Sparks v Detroit 9/10/04
29 points, 15 rebounds, 10 blocks

Deanna Nolan Detroit Shock v Connecticut 5/21/05
11 points, 10 rebounds, 11 assists

Triple-doubles during the playoffs
Sheryl Swoopes Houston Comets v Seattle 9/4/05
14 points, 10 rebounds, 10 assists