WEST VANCOUVER, British Columbia — Shaun White had the trick in the bag, along with an Olympic gold medal.

Might as well go for it, right?

Putting on a show when he hardly needed to, White capped his sensational night on the halfpipe with his signature move yesterday — the dangerous, spiraling Double McTwist 1260 during a victory lap that will go down as nothing short of epic.

The redheaded shredder scored a 48.4 on the final run, even though he was already assured of defending his Olympic title with a score of 46.8 on his first trip. Getting ready to close the night, he debated with his coaches for a minute, then made the decision.

Showtime! To the delight of cheering fans, he jerked his body around to milk the last half of the 3 1/2 twists he crams into two head-over-heels flips.

"I just felt like I didn't come all the way to Vancouver not to pull out the big guns," White said.

An exclamation point on a spectacular day at the games for the Americans, who already had golds from Alpine skier Lindsey Vonn and speedskater Shani Davis.

Wearing a blue bandanna with white stars, all of which goes perfect with the red hair, White easily outdistanced Finland's Peetu Piiroinen.

"It's impossible to beat Shaun unless he falls," Piiroinen said.

American Scotty Lago took bronze to give the United States multiple medals on the halfpipe for the last three Olympics. Including the women, the U.S. halfpipe team has won 12 of the 21 medals awarded since the sport came to the games in 1998.

But has there ever been a bigger snowboarding star than White?

He's the multimillionaire who somehow flashes a businessman's smarts without losing touch with the culture that defines snowboarding — the only sport that would think of competing in snow pants designed to look like torn-up jeans.

He keeps it fresh and he keeps people guessing.

White skipped the Double McTwist on the first run down the mountain, saying in an interview, "I know I have it in me, but the Olympics is pretty heavy. I was sweating it a little."

But if he was nervous on the first run, it didn't show. And it certainly wasn't anything to apologize for.

Soaring through the crisp, clear, Canadian sky, he flew 25 feet above the halfpipe at the top, linked a pair of spiraling, double-flipping moves in the middle and stayed on his feet the whole way down.

NBC spelled it all out in living color, transposing the shots of White's straight air and that of one of the medal contenders, Iouri Podladtchikov — the "I-Pod." Suffice to say that had they actually been jumping at the same time, White would have landed on I-Pod's head.

In White's case, though, it doesn't always end when he wins.

He has become one of those rare athletes who makes the victory lap as dramatic as the show — think Mary Lou Retton's second straight perfect-10 vault at the 1984 Olympics.

Knowing he had won, and celebrating at the top, he gathered himself and talked it over with the coach. The conclusion: It is supposed to be about fun.

"With a gold medal already in his pocket, Shaun went out and beat his winning score," said White's sponsor, Jake Burton, the godfather of the sport. "What a testament to how much fun snowboarding is. And what a true champion Shaun is."

White linked two double-flipping tricks — "easier" versions of the signature move — then lost a little speed on the fourth jump, the one that sets up the finale, but went for the big trick anyway. It wasn't exactly perfect. He had to really twist his body to get the last half twist, but he did it, landed on his feet, and the party that had already started got even bigger.

White developed the Double McTwist 1260 about a year ago, but an injury halted his work on it. Meantime, he couldn't get himself to commit to it because it was dangerous and he didn't really think he'd need it.

At that point, back-to-back double corks were enough to win almost any contest, and nobody did them better than The Flying Tomato.

But things changed drastically when one of White's main rivals, Kevin Pearce, suffered a severe head injury while practicing the double cork. At the next meet, a good friend of Pearce's, Danny Davis, became the first rider to try three double corks in the same run. Stuck them all. Beat White. And caused him to cancel his vacation plans so he could get back to work on his signature trick.