There are a number of sites online where you can watch super bowl commercials live online. You can also find a favorite ad from previous games by searching online.
You can find almost all of the super bowl tv commercials on YouTube, or other video sharing sites. You can expect a good search facility from YouTube. Just put the description in the search box, and locate the ad you want on the search results. Millions view those popular commercials, and expect lots of people to view it online on and after super bowl Sunday.
You can also watch super bowl commercials online on Yahoo! video and Google video. They also offer excellent service and you are likely to find what you are looking for.
The ads are ranked by I think by votes so you can see which ones are the most popular.
Here is the list of the commercials for super bowl XLII :
Victoria's Secret
Adriana Lama will appear in the one spot late in the third quarter or early in the fourth quarter
Anheuser-Busch
Seven Spots in the game. Caveman use wheel to get cooler to a party
Anheuser-Busch
Seven Spots in the game. Bud-light no longer available with x-ray vision.
Anheuser-Busch
Seven Spots in the game. Bud-light no longer available with ability to breathe fire.
Anheuser-Busch
Seven Spots in the game. Dalmatian trains clydesdale.
Anheuser-Busch
Seven Spots in the game. Carlos Mencias teaches English
Audi of America
60 sec. spot in the first quarter. First Super Spot in 20 years. Uses Godfather theme.
Bridgestone
Two 30 seconds spots. Bridgestone or nothing
Cars.com
Two 30 Sec spots. first and third quarters. "Stone Circle"
Coca-Cola Co.
No further information released at this time
Dell
Spot to air in last break of the first quarter, will promote special crimson red computers. Sales will benefit charity c-founded by Bono.
Disney
Spot for Wall-E Pixar's newest film and/or The Chronicles of Narnia : Prince Caspian
E-Trade
Two 30 sec. spots. Details are being a closely held secret until game day
FedEx
One 45 sec spot in first quarter
Fox
No further information released at this time
Frito-Lay
Doritos song contest winner
Garmin
No further information released at this time.
Gatorade
2 spots, maybe more
General Motors
One 60 sec spot in the second quarter
GoDaddy.com
This ad will promote the online version of their ad that was rejected.
GoDaddy.com
Danica Patrick unzips in the online version.
Hershey
Possibly featuring Carmen Electra
Hyundai
Two 30 sec. spot in third quarter
Kraft Foods
One 30 sec spot for Planters Nuts
New Line
Spot for Semi-Pro starring Will Ferrell
NFL
One 60 sec spot with fans determining favorite football star story. Reported to have won by Ephraim Salaam
ONDCP
Ad aimed at prescription drug related abuse
Paramount Pictures
Iron Man spot
Pepsi-Cola
Before the game spot's mission is to bring awareness of the American deaf community. Titled Bob's House, the theme is based on a popular joke
Pepsi-Cola
One Spot for AMP Energy drink featuring Dale Earnhardt Jr. and camel
Procter & Gamble
Spot for Tide to Go. Ad is scheduled to appear in the second quarter
Salesgenie.com
Three animated spots during before the game, first, and third quarters
Sony Pictures
Hancock, with Will Smith spot likely.
Sony Pictures
You Don't Mess with the Zohan!, with Adam Sandler spot likely.
Toyota
No further information at this time
Under Armour
60 second spot will feature sports personalities in extreme-training conditions
Unilever
One spot at 2:00 minute warning of the fourth quarter. Ad is for sunsilk and promote LifeCantWait.com
Universal Pictures
No further information released at this time.
Warner Bros.
No further information released at this time.