Samantha Who? Samantha Who?

Samantha Who?
8:30/7:30 CT ABC
The final bell tolls for the Christina Applegate sitcom just when wedding bells are ringing for Andrea and her gay basketball star fiancé, Tony Dane. It's a big day for Sam, too, as she has to decide whether she wants to be with billionaire Winston Funk (Billy Zane) or Todd. Meanwhile, Howard and Regina have a decision to make when they begin to realize their paths are starting to diverge. Fred Mitchell

So You Think You Can Dance
9/8 CT FOX
It's the 100th episode of the series, and tonight's results show, which will narrow the field to six, should be quite the milestone. Katie Holmes, who teamed up with Nigel Lythgoe, Adam Shankman and Carrie Ann Inaba to create the dance scholarship program Dizzy Feet Foundation, pays tribute to Judy Garland with a version of "Get Happy." Then it's a SYTYCD reunion when Season 2's Travis Wall and Heidi Groskreutz perform two Wade Robson routines, and Season 3's Jaimie Goodwin and Hok Konishi dance one of Mia Michaels'. Joe Friedrich

Royal Pains
10/9 CT USA
Hank has seen his fair share of baffling cases since he settled into the role of concierge doctor for the Hamptons set. But when he begins to catch wind of just how much Boris is hiding from him, the good doc starts demanding answers. Especially after Boris offers Jill's childhood pal a job. Elsewhere, Without a Trace's Roselyn Sanchez guest stars as a feisty patient of Hank's. Brie Hearn

Southern Belles: Louisville
10/9 CT SoapNet
As we say good-bye to the ladies of Louisville in this first-season finale, Emily says farewell to her friends and family as well, as she prepares to move to Las Vegas. After she finally lets her parents in on the big move, her pals throw her a going-away party. And what about Kellie possibly relocating to Chicago? She gives Jeff an answer about that, and Hadley makes a decision regarding bad boy Russ. Meanwhile, Shea does more shopping this time for a house. Jennifer Sankowski

Wild Russia
8/7 CT Animal Planet
There's much more to Russia than vodka and fur hats. Tonight, Animal Planet launches a new series that will take nature buffs deep inside this mysterious land, providing a spectacularly detailed look at the country's varied geography. The journey starts with the volcanic Kamchatka region in the east, home to brown bears, eagles and other predators, as well as uncommon birds like the willow ptarmigan, all of which thrive in this harsh climate of temperature extremes. Rhoda Charles