Spain's Alberto Contador celebrates on the podium his Yellow jersey of Overall leader with US actors, Cameron Diaz and Tom Cruise at the end of the 18th stage. But are they fans or just celebrities making the rounds promoting their new movie "Knight and Day"?

Fans wave Norway's and Basque flags as they wait for riders at Col du Tourmalet pass in the 174 km and 17th stage of the 2010 Tour de France cycling rece run between Pau and the famous Col du Tourmalet pass in French Pyrenees on July 22, 2010.

PAU, FRANCE - JULY 20: Race fans show their presence on stage sixteen where a fan feels a Santa Clause costume has relevance at the most grueling and unforgiving cyclist competition in world history.

A fan, wearing a hat with international flags on it, blows in a trumpet as he waits for riders during the 187 km and 15th stage of the 2010 Tour de France cycling race run between Pamiers and Bagneres-de-Luchon on July 19, 2010.

The pack rides past fans, dressed up as Prehistoric people. With the Tour de France beginning in 1903 to usurp the prominent newspaper for its support of Alfred Dreyfus, I'm not sure what relevance prehistoric times may have on the Tour... maybe they dwelled in the Mas d'Azil cave and were forced out by all the commotion.

Fans, dressed up as Prehistoric people, wait for riders at the entrance of the Mas d'Azil cave. Are they waiting to cheer? Or are they standing gaurd over their territory defending their land against those pesky cyclists.

A fan, wearing a sun umbrella with cyclists toys, waits for the pack of cyclists on the hot streets between Pamiers and Bagneres-de-Luchon on July 19, 2010

A fan holds a placard reading "Go Lance Livestrong" to support Lance Armstrong as she waits for riders during the 210,5 km and 12th stage of the 2010 Tour de France.

Fans, wearing swimsuits, ask for feeding bottles as the pack rides during the 210,5 km and 12th stage of the 2010 Tour de France.

Fans wait for riders next to a crucifix during the 210,5 km and 12th stage of the 2010 Tour de France on July 16, 2010.

Fans sit on a rick as they wait for riders during the 210,5 km and 12th stage of the 2010 Tour de France on July 16, 2010.

A fan waits for riders with a banner near her reading "Lance will you marry me" and giving her phone number on July 15, 2010 in the 184,5 km and 11th stage of the 2010 Tour de France.

A young fan waves as he waits for the riders on the roof of a camping car during the 184,5 km and 11th stage of the 2010 Tour de France.

A fan from Netherlands holds a national flag as he waits for riders on July 15, 2010 in the 184,5 km and 11th stage of the 2010 Tour de France.

Fans dressed as cowboys wave a U.S. flag as the pack rides on July 14, 2010 during the 179 km and 10th stage of the 2010 Tour de France.

Jean-Pierre Caloini, aka Le Frelon (the hornet), poses during the 179 km and 10th stage of the 2010 Tour de France cycling race run between Chambery and Gap, southeastern France, on July 14, 2010.

Fans wave flags as they wait for riders on the roadside in the 204,5 km and 9th stage of the 201 Tour de France cycling race run between Morzine Avoriaz ski resort and Saint-Jean de Maurienne, in Savoy, on July 13, 2010.

Alberto Contador of Spain gestures to a spectator, left, as he climbs towards Madeleine pass during the 9th stage of the Tour de France cycling race over 204.5 kilometers (127 miles) with start in Morzine-Avoriaz, and finish in Saint-Jean-de-Maurienne, France, Tuesday, July 13, 2010.

Picture shows a fan sitting on a huge decoration yellow bike on Jul 11, 2010 during the 189 km and 8th stage of the 2010 Tour de France cycling race run between Les Rousses and Morzine Avoriaz ski resort.

Spain's Alberto Contador, the 2009 Tour de France winner, made his mark on the jersey of a little fan while taking a break from rest-day training on July 12, 2010.

American Lance Armstrong pulled off the wig of a fan running beside him during the Tour de France's eighth leg between Les Rousses and Morzine Avoriaz ski resort.

Fans cheer on the pack riding on July 11, 2010 in the 189 km eighth stage of the 2010 Tour de France.

A spectator ducks to avoid water sprayed by one of the sponsor vehicles at the start of the eighth stage of the Tour de France cycling race on July 11, 2010.

A fan of Lance Armstrong holds a sign prior to the start of the seventh stage of the Tour de France which is over 165.5 kilometers (102.8 miles), starts in Tournus and finishes in Station des Rousses, France on July 10, 2010.

A fan of the British cyclists protects himself from the sun with the national flag as he waits for the start of the seventh stage of the Tour de France.

Jean-Pierre Caloini, also known as Le Frelon (which means "the hornet" in English), had a prime location to cheer on the pack during July 9, 2010 racing action.

Fans came to the aid of an Astana rider who had difficulty with his bicycle chain during a climb on July 9, 2010.

Finding a way to beat the heat and still watch the racers, spectators cheered from their seating area in the Arroux on Friday, July 9, 2010.

Women take pictures of the peloton as it rides along the 227.5km route from Montargis to Gueugnon on July 9, 2010.

A clown got in on the fun during the Tour de France leg between Montargis and Gueugnon.

A young boy ran next to the peloton for as long as he could during the 227.5km stage six route from Montargis to Gueugnon.

Costumes and other types of bikes were featured prior to the start of the sixth stage in Montargis.

A jeep provided the perfect viewing platform for one fan during the fifth stage of the 2010 Tour de France on July 8, 2010.

Fans wait for the peloton to pass during stage four on July 7, 2010 in Reims, France. A relatively flat stage, the route featured only one category four climb. Italian Alessandro Petacchi with the Lampre team won the stage in a sprint finish. Swiss rider Fabian Cancellara of team Saxo Bank has kept hold of the yellow jersey while Lance Armstrong sits in 18th place overall.

Fans wait for the riders on July 7, 2010 in Cambrai, northern France, before the start of the fourth stage.

Fans cheer on Canada's Ryder Hesjedal riding in a breakaway in a cobblestone sector on July 6, 2010 in the third stage ran between Wanze and Arenberg, northern France.

Fans wait for the riders on July 6, 2010 in Wanze, in the Meuse valley, before the start of the 213 km third stage of the 2010 Tour.

Race fans wait for the riders to reach the finish line of stage two of the 2010 Tour de France from Brussels to Spa on July 5, 2010.

Using a 4-wheeler, a young boy gets a better view of the cyclists on July 5, 2010.

An American fan cheers on France's Sylvain Chavanel as he rides in a breakaway before winning the 201 km second stage of the 2010 Tour.

Australian cycling fans cheers the riders prior to the start of the second stage of the Tour de France cycling race on Monday July 5, 2010.

Fans protect themselves from the sun under yellow umbrellas as they wait for the riders on the roadside at the start of the first stage of the 2010 Tour de France.

Fans look at the pack riding on July 4, 2010.

Fans took pictures and waited for the riders on the roadside in Rotterdam on July 4, 2010.

Fans wait for the riders on Erasmus bridge in Rotterdam.

People watch teams perpare for the start of the 223.5km leg between Rotterdam and Burssels on July 4, 2010.

American actor Ben Stiller brought along his camera to capture some of the action on the first day of the 2010 Tour de France on July 3.