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 employs jealousy as a selling tactic; Lowe's thoughts turn to spring and yard beautification; Cabela's heads to the great outdoors; and OtterBox puts its latest Defender series phone cases to the test.

Finally, Little Caesars makes use of two talking (and floating) heads, who appear to be from another time and dimension, to promote its deep dish pizza.

Today's TV Ad Highlights

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New Releases

Top new ads recently aired on national TV

Little Caesars Pizza: Faces

Network: Lifetime

Show: Dance Moms

Primetime Airing: Mar. 22, 8:31 pm ET

Taco Bell: Jealous

Network: Spike

Show: Ink Master

Primetime Airing: Mar. 22, 8:31 pm ET

Lowe's: Beautiful Flamingo

Network: CBS

Show: NCIS

Primetime Airing: Mar. 22, 8:06 pm ET

Cabela's: Spring Great Outdoor Days Sale: Time to Cook Out

Network: DIY

Show: Building Alaska

Primetime Airing: Mar. 22, 9:08 pm ET

Otter Box: Are You Defender Series Tough?

Network: ESPN

Show: SportsCenter

Airing Date: Mar. 22, 4:29 am ET

Most Engaging

Top ads by SpotShare for the past 7 days

Apple iPhone: Timer: Cookie Monster

Online Views: 4,090,546

Social Actions: 198,389

SpotShare: 7.57%

Samsung Mobile: Champagne Calls

Online Views: 3,026,462

Social Actions: 13,461

SpotShare: 1.29%

GEICO: Tree

Online Views: 2,555,759

Social Actions: 5,142

SpotShare: 0.89%

M&M's: Candyman

Online Views: 2,352,561

Social Actions: 4,342

SpotShare: 0.82%

Mountain Dew: Puppymonkeybaby

Online Views: 518,816

Social Actions: 17,659

SpotShare: 0.73%

Want 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.