Jason Priestley never would follow in the dancing footsteps of his old pal Ian Ziering from Beverly Hills 90210.

It's not that Priestley isn't proud of how well Ziering is doing as a celebrity contestant on the fourth season of Dancing with the Stars (tonight, CTV, ABC). But Priestley left no room for interpretation when asked if he ever would consider appearing on the show himself.

"Not a chance," Priestley said. "No grey area there.

"I'm still fighting against the whole reality TV trend. I can't just buy into it. Now, if I know somebody on one of these shows, I'll watch it. But to actually do it? I can't really see myself going that route."

Priestley was in the Dancing with the Stars audience a couple of weeks ago to support Ziering, who has made the "final four" along with former N'Sync member Joey Fatone, boxer (and Muhammad Ali's daughter) Laila Ali and speed-skater Apolo Anton Ohno. Paulina Porizkova, Shandi Finnessey, Leeza Gibbons, Clyde Drexler, Heather Mills and John Ratzenberger already have been eliminated.

"Here's the thing about Ian -- he is so ultra-competitive," Priestley said. "He's not a guy who played team sports or organized sports when he was a kid. So as an adult he's really competitive.

"He's taking this all really seriously, which is very funny. But he's doing great. I'm happy for him and he's excited about it."

Priestley recently appeared in a pair of CTV made-for-TV movies Luna: Spirit of the Whale and Shades of Black. He also has signed on for a new series called Side Order of Life, which will be shown on the Lifetime network in the United States.