Every weekday, we bring you the Ad Age/iSpot Hot Spots, new and trending TV commercials tracked by iSpot.tv, a company that catalogs, tags and measures activity around TV ads in real time. The New Releases here ran on TV for the first time yesterday. The Most Engaging ads are showing sustained social heat, ranked by SpotShare scores reflecting the percent of digital activity associated with each one over the past week. See the methodology here.

Among the new releases, Taco Bell is giving a free Biscuit Taco on May 5 to those who "defect" from the breakfast served in the fictional dictatorship of its latest ad campaign.

Brands have also started trying to capitalize on Mother's Day: Verizon argues its better reception helps you win more love from your mother than your sibling who does not have Verizon. And 1-800-Flowers.com makes the more straight-forward pitch: You should get your mom flowers.

Today's TV Ad Highlights

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New Releases

Top new ads recently aired on national TV

Taco Bell: Free Biscuit Taco

Network: TNT

Show: NBA Basketball

Primetime Airing: Apr. 28, 9:09 pm ET

Verizon: Flipside Stories: Birthday Brunch

Network: ABC

Show: 20/20

Primetime Airing: Apr. 28, 10:43 pm ET

Weight Watchers: Another One Bites the Dust!

Network: ION

Show: Criminal Minds

Primetime Airing: Apr. 28, 8:23 pm ET

Papa Murphy's Pizza: Taste the Difference

Network: CW

Show: Seinfeld

Primetime Airing: Apr. 28, 10:56 pm ET

1-800-FLOWERS.COM: Be the Reason Mom Feels Loved

Network: USA Network

Show: NHL Hockey

Primetime Airing: Apr. 28, 8:04 pm ET

Most Engaging

Top ads by SpotShare for the past 7 days

Foot Locker: It's Really Happening

Online Views: 2,486,451

Social Actions: 55,709

SpotShare: 4.61%

Samsung Mobile: What Does Color Feel Like?

Online Views: 2,997,358

Social Actions: 5,350

SpotShare: 1.73%

Nike: Better for It: Inner Thoughts

Online Views: 2,593,986

Social Actions: 8,126

SpotShare: 1.71%

adidas: Here's to the Takers

Online Views: 1,350,338

Social Actions: 17,399

SpotShare: 1.71%

GEICO: South Pole, Dora the Explorer: It's What You Do

Online Views: 2,089,387

Social Actions: 10,425

SpotShare: 1.62%

To Watch Super Bowl Commercials past and present visit iSpot.tv

As always, you can find out more about the best commercials on TV at Ad Age's Creativity.

Miss the previous installment of Hot Spots? Click here.